tgif - Online in the Cloud

PROGRAM:

NAME

tgif - Xlib based interactive 2-D drawing facility under X11. Supports hierarchical
construction of drawings and easy navigation between sets of drawings. It's also a hyper-
graphics (or hyper-structured-graphics) browser on the World-Wide-Web.

SYNOPSIS

tgif [-display displayname] [-fg <color>] [-bg <color>] [-bd <color>] [-rv] [-nv] [-bw]
[-reqcolor] [-cwo[+sbwarp]] [-hyper] [-exec <file>] [-dbim
{xcin|chinput|xim|kinput2|tgtwb5[,font]}] [-sbim xim] [-usexlib] [{-a4|-letter}]
[-listdontreencode] [-version] [-pdfspd | -pdfspd=true | -pdfspd=false ] [-pssetup
"<string>" ] [-tgwb2 [-rmcastlibdir <directory> | -rmcastlibpath <path>]] [-nomode]
[-geometry <geom>] [=<geom>] [{file[.obj]|-merge file1[.obj] file2[.obj] ...}]

or

tgif -print [-eps] [-p] [-ps] [-f] [-text] [-epsi] [-tiffepsi] [-gif] [-png] [-jpeg]
[-ppm] [-pbm] [-xpm] [-xbm] [-html] [-pdf] [-netlist] [-svg] [-display displayname]
[-stdout] [-raw[+h[eaderonly]]] [-dosepsfilter [-previewonly]] [-status] [-gray] [-color |
-reqcolor] [-adobe | -adobe=<number>/<number> | -adobe=false ] [-dontreencode=<string> |
-listdontreencode] [-version | -justversion] [-producedby=<string>] [-page <number>]
[-print_cmd "<command>"] [-one_file_per_page] [-pepsc] [-pdfspd | -pdfspd=true |
-pdfspd=false ] [-pssetup "<string>" ] [-j2p6_cmd "<command>" ] [-dontcondense |
-condensed] [{-a4|-letter}] [-noshowpageineps] [-quiet] [-bop_hook "<string>"] [-eop_hook
"<string>"] [-tmp_file_mode "<octal number>"] [-patterndir "<xbm directory>"] [-o<dir>]
[-exec <file>] [file1[.obj] file2[.obj] ...]

DESCRIPTION

Tgif is an interactive drawing tool that allows the user to draw and manipulate objects in
the X Window System. Tgif runs interactively in the first form. In the second form shown
in the SYNOPSIS section, tgif just prints file1.obj, file2.obj, etc. (generated by tgif)
into PostScript(TM) page description files (without opening windows or fonts) and pipes
them to lpr(1) if none of the -eps, -p, -epsi, -tiffepsi, -gif, -png, -jpeg, -ppm, -pbm,
-xpm, -xbm, -html, -pdf, -ps, -f, -text, -netlist, or -svg options are specified. This
form of printing is tgif's way of exporting a tgif file to another format. In this case,
any other unrecognized command line options are sent to lpr(1). In this mode, tgif is
compatible with the obsoleted prtgif. A symbol file (see descriptions below) can also be
printed by specifying the .sym extension explicitly.

The command line argument file specifies a file or an Uniform Resource Locator (URL) of
objects to be initially edited by tgif. Only HTTP or FTP URL's are supported. (For a
more detailed description of URL and the World-Wide-Web, the reader is referred to [1].)

Tgif is purely based on Xlib. It is tested under X11R6, and it requires a 3 button mouse.

OPTIONS

In the first form shown in the SYNOPSIS section, the command line arguments can be:

-fg Foreground color specified in <color>.

-bg Background color specified in <color>.

-bd Border color specified in <color>.

-rv Start tgif in reversed-video mode.

-nv Start tgif in normal-video mode.

-bw Start tgif in black and white mode.

-reqcolor
Same effect as setting the Tgif.PrintUsingRequestedColor X default to true (see the
X DEFAULTS section below).

-cwo Canvas Window Only. Only the canvas window (see TGIF SUBWINDOWS section below)
will be displayed. This has the same effect as setting the Tgif.CanvasWindowOnly X
default to true.

-cwo+sbwarp
If -cwo+sbwarp is used, single-button-warp (clicking the left mouse button to warp)
is used to activate teleporting (see TELEPORT/HYPERJUMP section below).

-hyper Start tgif in the hyperspace mode (see HYPERSPACE section below).

-exec <file>
After tgif starts, execute the internal command in <file> (see INTERNAL COMMANDS
section below). If <file> is the string "-", tgif executes internal commands from
the standard input.

-dbim method
Use method as the input method for double-byte fonts (see SQUARE DOUBLE BYTE FONTS
section below). This cannot be used in conjunction with -sbim.

-sbim method
Use method as the input method for single-byte fonts. This is useful if the X
Keyboard Extension is used in inputing international characters (with dead keys).
This cannot be used in conjunction with -dbim.

-usexlib
If tgif is compiled with -DUSE_XT_INITIALIZE, X Toolkit initialization routines
will be used to setup tgif. Using this command line option will force tgif to
ignore the -DUSE_XT_INITIALIZE compiler option and use Xlib only. This is useful
when the system resource file for tgif is not installed properly or messed up and
needs to be bypassed.

-a4 Using this option has the same effect as setting the Tgif.PSA4PaperSize X default
to true.

-letter
Using this option has the same effect as setting the Tgif.InitialPaperSize X
default to "letter"

-noshowpageineps
Using this option has the same effect as setting the Tgif.ShowPageInEPS X default
to false.

-quiet If this option is used, tgif will suppress standard messages.

-listdontreencode=<string>
If this option is used, tgif will print out the list of PostScript font names
specified in the -D_DONT_REENCODE compiler option used in compiling tgif.

In the second form shown in the SYNOPSIS section, the command line arguments can be:

-version
If this option is used, tgif will print out its version number and copyright on the
command line.

-justversion
If this option is used, tgif will print out its version number and copyright on the
command line and exits immediately.

-nomode
Using this option has the same effect as setting the Tgif.NoModeWindow X default to
true.

-eps (or -p)
Generates an Encapsulated PostScript(TM) file in file.eps; this file can be
included in a LaTeX file through the \psfig, \epsf, or \psfile construct (see the
LATEX FIGURE FORMATS section below).

-ps (or -f)
Generates a PostScript file in file.ps; this file can be printed to a PostScript
printer with lpr(1).

-text Generates a text file in file.txt; the text file contains all visible text and can
be fed to a spell checker.

-epsi Generates an Encapsulated PostScript (EPS) file with a preview bitmap in file.eps.
Tgif aborts if a valid display is not accessible.

-tiffepsi
Generates an EPS file with a DOS EPS Binary File Header and a trailing TIFF image
in file.eps. See the GENERATING MICROSOFT WINDOWS EPSI FILES section for more
details. Tgif aborts if a valid display is not accessible.

-gif Generates a GIF file in file.gif. Please see the notes for Tgif.GifToXpm in the X
DEFAULTS section below. Tgif aborts if a valid display is not accessible.

-png Generates a PNG file in file.png. Tgif aborts if a valid display is not
accessible.

-jpeg Generates a JPEG file in file.jpg. Tgif aborts if a valid display is not
accessible.

-ppm Generates a PPM file in file.ppm. Tgif aborts if a valid display is not
accessible.

-pbm Generates a PBM file in file.pbm. Tgif aborts if a valid display is not
accessible.

-xpm Generates an X11 pixmap (XPM) file in file.xpm. Tgif aborts if a valid display is
not accessible.

-xbm Generates an X11 bitmap (XBM) file in file.xbm. Tgif aborts if a valid display is
not accessible.

-html Generates a GIF file in file.gif and an HTML file in file.html. Tgif aborts if a
valid display is not accessible.

-pdf Generates a PDF file in file.pdf. Please see the notes for Tgif.PsToPdf in the X
DEFAULTS section below.

-netlist
Generates a text file in file.net and a text file in file.cmp. file.net contains
netlist information stored in a table. The first line in it contains column names
and each line in it is a port name (surrounded by double-quotes), followed by a
comma and a <TAB> character, followed by a signal name (also surrounded by double-
quotes). file.cmp contains information about components in the file. Each
component begins with its name followed by its type. The attributes of a component
are printed afterwards (indented by <TAB> characters).

-svg Generates an SVG file in file.svg. Please see the notes for Tgif.EpsToTmpSvg and
Tgif.TmpSvgToSvg in the X DEFAULTS section below.

-stdout
Sends the output to the standard output instead of generating the output in a file.

-raw Causes the content of the files to be dumped to stdout.

-raw+h If -raw+h is used and if the file is an HTTP URL, the HTTP header is also dumped to
stdout.

-raw+headeronly
If -raw+headeronly is used and if the file is an HTTP URL, the HTTP header is
dumped to stdout.

-dosepsfilter
Makes tgif act as a filter for getting rid of the DOS EPS Binary File Header and
the trailing TIFF image in a DOS/Windows EPS file.

-previewonly
If -dosepsfilter is specified, -previewonly makes tgif act as a filter for
extracting the preview bitmap from the trailing TIFF image in a DOS/Windows EPS
file.

-status
If this option is used in conjunction with either -raw, -raw+h, or -raw+headeronly
causes a status line to be displayed in stderr.

-gray Using this option has the same effect as setting the Tgif.UseGrayScale X default to
true (see the X DEFAULTS section below).

-color (or -reqcolor)
To print in color, one can use either the -color or the -reqcolor option. The only
difference between the two is that using -reqcolor has the same effect as setting
the Tgif.PrintUsingRequestedColor X default to true (see the X DEFAULTS section
below).

-adobe (or -adobe=<number>/<number> -adobe=false)
Using this option has the same effect as specifying the Tgif.UsePsAdobeString X
default.

-dontreencode=<string>
Using this option has the same effect as specifying the Tgif.DontReencode X
default.

-producedby=<string>
Using this option has the same effect as specifying the Tgif.ProducedBy X default.

-page Causes a specified page (specified by <number>) to be printed.

-print_cmd
Using this option has the same effect as specifying the Tgif.PrintCommand X
default.

-one_file_per_page
Causes each page to be printed into a separate file.

-pepsc Preserve EPS Comment. This command line option became obsolete since EPS comments
are always preserved starting from tgif-4.0.11.

-nolandpdfspd
This commandline option became obsolete in tgif-4.1.42. It is interpreted as
-nopdfspd.

-pdfspd (or -pdfspd=true -pdfspd=false)
If -pdfspd or -pdfspd=true is specified, "setpagedevice" is generated in the
interim PostScript file when exporting PDF files or in the final PostScript file
when exporting PS files. If -pdfspd=false is specified, no "setpagedevice" will be
generated in the interim PostScript file when exporting PDF files or in the final
PostScript file when exporting PS files. This option overrides the
Tgif.PdfSetPageDevice X default.

-pssetup
Using these options have the same effect as specifying the Tgif.AdditionalPSSetup X
default.

-tgwb2 This commandline option enables the Tangram Whiteboard feature in tgif. It
requires librmcast.so (Reliable IP-multicast library). The location of the rmcast
library can be specified by the optional commandline argument -rmcastlibdir.
Alternatively, the full path to the rmcast library can be specified by using the
optional commandline argument -rmcastlibpath. (Please note that the rmcast library
has only been extensively tested on Linux machines.)

-j2p6_cmd
Using this option has the same effect as specifying the Tgif.JpegToPpm6 X default.

-dontcondense
Using this option has the same effect as setting the Tgif.DontCondensePSFile X
default to true.

-condensed
Using this option has the same effect as setting the Tgif.DontCondensePSFile X
default to false.

-bop_hook and -eop_hook
Using these options have the same effect as specifying the Tgif.PSBopHook and
Tgif.PSEpsHook X defaults.

-tmp_file_mode
Using this option have the same effect as specifying the Tgif.TmpFileMode X
defaults.

-patterndir
Using this option have the same effect as specifying the Tgif.CustomPatternDir X
defaults.

-o If this option is not specified, the output file (eps, ps, etc.) goes into the
same directory as the input file. If -o<dir> is specified, the output file goes
into the directory specified by <dir>.

-merge file1 file2 ...
Using this option merges file1.obj, file2.obj, etc. into a multipage file.

BASIC FUNCTIONALITIES

Primitive objects supported by tgif are rectangles, ovals, rounded-corner rectangles,
arcs, polylines, polygons, open-splines, closed-splines, text, X11 bitmaps, some specific
forms of X11 pixmaps, and Encapsulated PostScript. (Please note that the splines tgif
draw are not Bezier curves.) Objects can be grouped together to form a grouped object. A
primitive or a grouped object can be made into an icon object or a symbol object through
user commands.

Tgif objects are stored in two types of files. A file with a .obj extension (referred to
as an object file) is a file of objects, and a file with a .sym extension (referred to as
a symbol file) specifies a ``building-block'' object. A teleport mechanism is provided to
travel (or hyperjump) among the .obj files. A building-block object consists of the
representation part and the definition part (which can be empty) of the object. Tgif
supports the ``bottom-up'' construction of hierarchical drawings by providing the
capability to ``instantiate'' a building-block object in a drawing. Tgif also supports
the ``top-down'' specification of drawings by allowing the user to make any object a
representation of an un-specified subsystem. Both types of files are stored in the form
of Prolog facts. Prolog code can be written to interpret the drawings! (It is left to
the user to produce the code. See the PROLOG/C TESTDRIVE section for more details.)
Prolog engines are referred to as drivers in the sections to follow. (Other types of
drivers are also allowed, e.g., written in C.)

Text based attributes can be attached to any non-text object. Attributes specified in the
representation part of a building-block object are non-detachable when such an object is
instantiated. See the ATTRIBUTES section for details.

Tgif can generate output in a few different formats. By default, the output is in the
PostScript format (color PostScript is supported), and it is generated into a file named
/tmp/Tgifa* (produced by mktemp() calls) where * is a number; this file is piped to
lpr(1). This takes place when the laser-printer icon is displayed in the Choice Window
(see the TGIF SUBWINDOWS section for the naming of tgif windows). This output can be
redirected to a file with a .ps extension. This takes place when the PS icon is displayed
in the Choice Window. When the PDF icon is displayed in the Choice Window, the output is
generated into a file with a .pdf extension. By default, tgif calls ps2pdf(1) from the
ghostscript(1) package to convert a PS file to a PDF file. When the LaTeX (or EPSI) icon
is displayed in the Choice Window, the output is generated into a file with a .eps
extension. This file is in the Encapsulated PostScript (or Encapsulated PostScript
Interchange) format; it can be included in a LaTeX document with the \psfig or the \epsf
construct; this will be discussed later. The only difference between the EPS and EPSI
formats is that an EPSI file contains a preview bitmap. However, it takes time to
generate the preview bitmap. If the EPS/EPSI file is to be incorporated into some tool
that does not know how to use the preview bitmap, time can be saved by not using the EPSI
format. When the T icon is displayed in the Choice Window, the output is generated into a
file with a .txt extension. This is a text file containing all visible text; it can be
fed to a spell checker. When the x11bm (X11 bitmap) icon is displayed in the Choice
Window and color output is not selected, tgif generates the output with the .xbm
extension; the output is in the X11 bitmap format. However, if the x11bm icon is
displayed in the Choice Window and color output is selected (through the ^#k keyboard
command -- ^ denotes the <Control> and # denotes the <Meta> or <Alt> key), then tgif
generates the output with the .xpm extension, and the output is in the X11 pixmap format
(the version of this XPM format depends on the settings of the Tgif.XPmOutputVersion X
default). When the GIF icon is displayed in the Choice Window, the output is generated
into a file with a .gif extension. By default, tgif calls xpmtoppm and ppmtogif from the
netpbm(1) package to convert an XPM file to a GIF file.

X11 bitmap files, certain forms of X11 pixmap files (such as the one generated by tgif;
see the section on X11 PIXMAP for details), GIF files, and Encapsulated PostScript (EPS)
files can be imported into tgif and be represented as tgif primitive objects. Files in
other raster formats (e.g, JPEG, TIFF, etc.) can also be imported into tgif if external
tools can be used to convert them into X11 pixmap files. Please see the IMPORT RASTER
GRAPHICS section for details.

Tgif drawings are supposed to be printed on letter size paper (8.5in by 11in). Both
landscape and portrait page styles are supported by tgif. Reduction (or magnification)
can be controlled by the #% keyboard command to set the reduction/magnification. If the
compiler flag -DA4PAPER is defined (in Imakefile or Makefile.noimake), then the output is
supposed to be printed on A4 papers (which has approximate dimensions of 8.25in by
11.7in).

GRAPHICAL OBJECTS

An object in an object (.obj) file can be a primitive object, a grouped object, or an icon
object. A symbol (.sym) file can have any number of objects allowed in an object file and
exactly one symbol object. (Recall that a symbol file specifies a building-block object.)
The symbol object in a symbol file is the representation part of the building-block
object, and the rest of the symbol file is the definition part of the building-block
object. The symbol object is highlighted with a dashed outline to distinguish it from the
rest of the objects. When a building-block object is instantiated, the symbol part of the
file is copied into the graphics editor, and it becomes the icon for the building-block
object.

All objects in tgif can be moved, duplicated, deleted, rotated, flipped, and sheared.
However, in the non-stretchable text mode, text objects can not be stretched. For an text
object, if it has not been stretched, rotated, or sheared, flipping it horizontally will
cause the text justification to change and flipping it vertically has no effect.

Tgif supports 32 fill patterns, 32 pen patterns, 7 default line widths, 4 line styles
(plain, head arrow, tail arrow, double arrows) for polylines and open-splines, 9 dash
patterns, 3 types of text justifications, 4 text styles (roman, italic, bold, bold-
italic), 11 default text sizes (8, 10, 12, 14, 18, and 24 for the 75dpi fonts and 11, 14,
17, 20, 25, and 34 for the 100dpi fonts), 5 default fonts (Times, Courier, Helvetica, New-
Century-Schoolbook, Symbol), and 11 default colors (magenta, red, green, blue, yellow,
pink, cyan, cadet-blue, white, black, dark-slate-gray). Additional line widths can be
added through the use of Tgif.MaxLineWidths, Tgif.LineWidth#, Tgif.ArrowWidth#, and
Tgif.ArrowHeight# X defaults. Additional text sizes can be added through the use of
Tgif.FontSizes X default. Additional fonts can be added through the use of
Tgif.AdditionalFonts X default. If the defaults fonts are not available, their
replacement fonts can be specified by Tgif.HasAlternateDefaultFonts and related X
defaults. Additional colors can be added through the use of Tgif.MaxColors, and
Tgif.Color# X defaults. One can also select AddColor() or ChooseColor() from the
Properties Menu to add a color. Alternate startup colors can be selected through the use
of the Tgif.ColorFromXPixmap, Tgif.UseStdPalette8, Tgif.UseStdPalette27,
Tgif.UseStdPalette64, Tgif.UseStdPalette216, Tgif.UseMobileWebSafePalette,
Tgif.UseOpenOfficeGalaxyPalette, Tgif.UseOpenOfficeGooglePalette, and
Tgif.AdditionalColors X defaults.

Most commands in tgif can either be activated by a popup menu or by typing an appropriate
non-alphanumeric key. All operations that change any object can be undone and then
redone. Commands such as zoom, scroll, change fonts while no text objects are selected,
etc. are not undoable. The undo/redo history buffer size can be set using the
Tgif.HistoryDepth X default.

TGIF SUBWINDOWS

The tgif windows are described in this section.

Top Window
Displays the current domain and the name of the file tgif is looking at. Mouse
clicks and key presses have no effect.

Menubar Window
This window is right under the Top Window. Pull-down menus can be activated from
it with any mouse buttons. Key presses have no effect. If HideMenubar() is
selected from the Layout Menu, this window becomes invisible. If ShowMenubar() is
selected from the Layout Menu (which can be activated from the Canvas Window
below), this window becomes visible.

The View, Text, and Graphics pull-down menus are cascading menus and can not be
pinned (see the Popup Menus subsection below for a description).

Message Window
This is right under the Menubar Window and to the right It displays tgif messages.
Clicking the left mouse button in this window scrolls the messages towards the
bottom, clicking the right mouse button scrolls towards the top, and clicking or
dragging the middle mouse button scrolls to the location in the message history
depending on where the mouse is clicked. If the <Shift> (or <Control>) key is held
down when clicking the left/right mouse button, it scrolls right/left.

Panel (Choice) Window
This is the window to the left of the Message Window, and it contains a collection
of icons (not to be confused with the tgif icon objects) reflecting the current
state of tgif. In top/bottom, left/right order, it displays the current drawing
mode, the page style (portrait or landscape), edit (see below), print/export mode,
zoom factor, move and stretch mode (constrained or unconstrained), radius for
rounded-corner rectangles, text rotation, page number or row/column, page layout
mode (stacked or tiled), horizontal alignment (L C R S -), vertical alignment (T M
B S -), font, text size, vertical spacing between lines of text within the same
text object, text justification, shape (see below), stretchable or non-stretchable
text mode, dash pattern, line style, polyline, spline, or interpolated spline, line
width, fill pattern, pen pattern, color, and special (see below). Key presses have
no effect in this window.

In addition to displaying the current state of tgif, the icons in the Choice Window
can also be used to change the current state. Each icon is associated with a
particular state variable of tgif. Clicking the left mouse button on top of an
icon cycles the state variable associated with the icon forward; clicking the right
mouse button cycles the state variable backwards. Dragging the middle mouse button
on top of an icon usually generates a popup menu which corresponds to an entry in
the Main Menu for the Canvas Window below. (The ``edit'', ``shape'', and
``special'' icons mentioned above are dummy icons that allow the ``edit'',
``shape'', and ``special'' menus to be accessed in the Choice Window. They do not
respond to left and right mouse clicks.) The response to the dragging of the
middle mouse button is different for the zoom, radius, and vertical spacing icons.
Dragging the mouse left or up increases the zoom or decreases the radius or
vertical spacing; dragging the mouse right or down has the opposite effect.

If there are objects selected in the canvas window, then the action of the mouse
will cause the selected objects to change to the newly selected mode; note that in
this case, the current choice won't change if the middle mouse button is used
(unless the Tgif.StickyMenuSelection X default is set to true).

The settings of the horizontal and vertical alignments determine how objects (or
vertices) align with each other when the ^l keyboard command is issued, how each
individual object (or vertex) aligns with the grids when the ^t keyboard command is
issued, how objects or vertices distribute spatially with respect to each other
when the #l keyboard command is issued, and how each icon replaces the old icon
when the ^#u keyboard command is issued. The horizontal alignments are left (L),
center (C), right (R), space (S), and ignore (-). The vertical alignments are top
(T), middle (M), bottom (B), space (S), and ignore (-). In aligning operations,
the space (S) and the ignore (-) settings have the same effect. The space settings
are used to distribute objects such that the gaps between any two neighboring
objects are equal. In vertex mode, any non-ignore setting will cause the selected
vertices to be spaced out evenly. The best way to understand them is to try them
out.

The text vertical spacing determines the vertical distance to advance when a
carriage return is pressed during text editing. If the user tries to set the value
too negative, such that the next line is exactly at the same position as the
current line, such a setting will not be allowed (this distance depends on the
current font and font size).

Canvas Window
This is the drawing area. The effects of the actions of the mouse are determined
by the current drawing mode. Before tgif-4.x, dragging the right mouse button will
generate the Mode Menu. This is disabled by default in tgif-4.x, but you can turn
it on using the Tgif.Btn3PopupModeMenu X default.

The drawing modes are (in order, as they appear in the Mode Menu) select, text,
rectangle, corner oval, center oval, edge circle, polyline (open-spline), polygon
(closed-spline), arc (center first), arc (endpoints first), rounded-corner
rectangle, freehand polyline (open-spline), select vertices, and rotate/shear.
When drawing a rectangle, an oval, or a rounded-corner rectangle, if the <Shift>
key is held down, a square, a circle, or a rounded-corner square is drawn.
Dragging the middle mouse button will generate the Main Menu.

In the select mode, left mouse button selects, moves, stretches, and reshapes
objects (double-click will ``de-select'' all selected objects in vertex mode).
When an object is selected, it is highlighted by little squares (referred as
handles here) at the corners/vertices (using the Tgif.HandleSize X default, the
sizes of the handles can be customized). Dragging one of the handles
stretches/reshapes the selected object. If one wants to move a selected object,
one should not drag the handles. Instead, one should drag other parts of the
object. For example, if the object is a hollow rectangle (the fill is NONE and the
pen is not NONE), in order to select the rectangle, one should click on the outline
of the rectangle with the left mouse button. If one would like to move the
rectangle, one should drag the outline of the rectangle with the left mouse button.
If the object is a filled rectangle (fill is not NONE), one can click inside the
rectangle to select it and drag anywhere inside the rectangle to move it.

Holding down the <Shift> key and clicking the left mouse on an object which is not
currently selected will add the object to the list of already selected objects.
The same action applied to an object which is already selected will cause it to be
de-selected. When stretching objects (not reshaping poly-type objects), holding
down the <Shift> key after stretching is initiated activates proportional
stretching (basically, a scale operation is being performed). In non-stretchable
text mode, text objects can not be stretched or scaled.

Double-clicking or clicking the middle mouse button while the <Shift> key is held
down will activate the teleport (or travel), the launch, or the execute internal
command mechanism. See the sections on TELEPORT/HYPERJUMP, LAUNCH APPLICATIONS,
and INTERNAL COMMANDS for details. Teleporting has precedence over launching,
which has precedence over executing an internal command. In the text drawing mode,
dragging the middle mouse button while the <Cntrl> key is held down inside the edit
text area will move the edit text area.

The arrow keys can also be used to move selected objects. However, if no objects
are selected, using the arrow keys will scroll the drawing area by a small amount,
and using the arrow keys when <Control> key is held down will scroll a screen full.

In the select vertices mode, left mouse button selects and moves vertices. Only
the top-level polyline/open-spline and polygon/closed-spline objects which are
selected when the vertex mode is activated are eligible for vertex operations. In
this mode, all eligible objects have their vertices highlighted with squares. When
a vertex is selected (using similar mechanism as selecting objects described
above), it is doubly highlighted with a '+' sign. Operations available to these
doubly highlighted vertices are move, delete, align (with each other), distribute
(space them equally), and align to grid. The arrow keys can also be used to move
selected vertices.

Objects can be locked (through the #< keyboard command). Locked object are shown
with gray handles, and they can not be moved, stretched, flipped, rotated, or
sheared. When objects are grouped, the resulting grouped object will also be
locked if any one of it's constituents is locked. Locked objects can have their
properties, such as color, font, pen, etc., changed; furthermore, they can be
deleted.

If the current move/stretch mode is of the constrained type (activated and
deactivated by the #@ keyboard command), top-level polylines will have the
following behavior. In a move operation, if both endpoints of a polyline lie
inside the objects being moved, then the whole polyline is moved; otherwise, if
only one endpoint falls inside the objects being moved, then that endpoint is
moved. The vertex that is the neighbor of the moved endpoint may also be moved
either horizontally or vertically. If the last line segment is horizontal or
vertical, then the neighbor vertex may be moved so that the direction of the last
line segment is maintained. In a stretch (not reshape) operation, if an endpoint
of a polyline lies inside the objects being moved, that endpoint will be moved.
The vertex that is the neighbor of the moved endpoint will also be moved in the
same manner as described above.

When the drawing mode is set to text (a vertical-bar cursor is shown), clicking the
left mouse button causes selected text to go into edit mode. Dragging the left
mouse button or clicking the left mouse button while the <Shift> key is held down
highlights substrings of the text. Double-clicking causes a word to be selected.
In edit mode, key presses are treated as text strings being inputed, and arrow keys
are used to move the current input position. If a key press is preceded by an
<ESC> key, then the character's bit 7 is turned on. This allows non-ASCII
(international) characters to be entered. One can use xfd(1) to see what the
corresponding international character is for an ASCII character. For the Symbol
font, symbols such as the integral, partial derivative, and copyright symbols can
all be found in this range. There are some characters that are supported by X11
but not by PostScript; these characters are not accepted by tgif. If the text
being edited is an attribute of a object, <Meta><Tab> will move the cursor to the
next visible attribute and <Shift><Tab> will move the cursor to the previous
visible attribute.

If the drawing mode is set to draw polygons (not closed-splines) and if the <Shift>
key is held down, the rubber-banded polygon will be self-closing.

The freehand drawing mode can be used to draw polylines and open splines. All
intermediate points are specified by moving the mouse (as opposed to clicking the
mouse buttons as in the polyline mode). The second endpoint is specified by
releasing the mouse button.

In all drawing modes (other than the text mode), pressing the <ESC> key cancels the
drawing (creation) of the current object.

Middle mouse button always generates the main tgif popup menu. Holding down the
<Shift> key and clicking the right mouse button will change the drawing mode to
select. Key presses with the <Control> or <Meta> key held down (referred to as
non-alphanumeric key presses since they can also generate control characters) are
treated as commands, and their bindings are summarized in the next section. Users
can also define single key commands to emulate the functions of the non-
alphanumeric key commands. The SHORTCUTS section will describe the details.

Scrollbars
Clicking the left mouse button in the vertical/horizontal scrollbar causes the
canvas window to scroll down/right by a small distance; clicking the right mouse
button has the reverse effect. (The scrollbars in the popup windows for selecting
file names and domain names behave similarly.) Clicking with the <Shift> key held
down will scroll a window full. Clicking or dragging the middle button will cause
the page to scroll to the location which corresponds to the gray area in the
scrollbars. (Tgif insists that the left-top corner of the Canvas Window is at a
distance that is a nonnegative multiple of some internal units from the left-top
corner of the actual page.)

Rulers
They track the mouse location. Mouse clicks and key presses have no effect. When
the page reduction/magnification is set at 100%, the markings in the rulers
correspond to centimeters when the metric grid system is used, and they correspond
to inches when the English grid system is used. When the page
reduction/magnification is not set at 100%, the markings do not correspond to the
above mentioned units any more (this is considered as a known bug).

Interrupt/Hyperspace Window
This window is right below the Message Window and to the left of the horizontal
ruler. When the Tgif.IntrCheckInterval X default has a positive value, an
interrupt icon is visible when the Canvas Window is being redrawn. If the user
clicks on this window when the interrupt icon is visible, tgif aborts the
repainting of the objects. If this is done when a file is being opened (either
through Open() or Push()), the drawing of objects is stopped, but the reading of
the file continues (reading of the file is not aborted).

If tgif is currently in the hyperspace mode (please see the HYPERSPACE section
below for more details), a space ship icon will be displayed when the interrupt
icon is not being displayed. Clicking any button in this window will switch tgif
in and out of the hyperspace mode.

Page Control Window
The Page Control Window is to the left of the horizontal scrollbar. This window is
empty if the current page mode is set to the tiled page mode. If the current page
mode is set to the stacked page mode, each page has a tab in tabs subwindow of this
window. Clicking the left mouse button on a tab goes to the corresponding page.
Clicking the middle mouse button brings up the Page Menu. When there are too many
pages in a drawing so that one can not see the tabs for all the pages, one can use
the icons to the left side of the Page Control Window to scroll the tabs subwindow.
Clicking on the first icon scrolls the tabs subwindow such that the first tab is
visible. Clicking on the 4th icon scrolls the tabs subwindow such that the last
tab is visible. Clicking on the 2nd icon scrolls the tabs subwindow towards the
first tab by one tab and clicking on the 3rd icon scrolls the tabs subwindow
towards the last tab by one tab.

Status Window
This window is below the horizontal scrollbar. It shows what action will be taken
if a mouse button is depressed. When a menu is pulled down or popped up, this
window shows what action will be taken if a menu item is selected. It also
displays miscellaneous status information. Mouse clicks and key presses have no
effect. If HideStatus() is selected from the Layout Menu, this window becomes
invisible. If ShowStatus() is selected from the Layout Menu, this window becomes
visible.

By default, when this window is displaying mouse button status, right-handed mouse
is assumed. Setting the Tgif.ReverseMouseStatusButtons X default to true will
reverse the status (as if a left-handed mouse is used).

Popup Menus
When a menu is popped up by a mouse drag, the menu can be pinned if it is dragged
far enough horizontally (the distance is determined by the setting of the
Tgif.MainMenuPinDistance X default). Clicking the right mouse button in a pinned
menu will cause it to disappear. Dragging the left mouse button in a pinned menu
will reposition the menu (except when the Tgif.TitledPinnedMenu X default is set to
true in which case the left mouse button performs the same function as the middle
mouse button). Clicking the middle mouse button in it will activate the item right
below the mouse.

NON-ALPHANUMERIC KEY BINDINGS

Most operations that can be performed in tgif can be activated through non-alphanumeric
keys (some operations can only be activated through popup menus or shortcut keys). This
section summarizes the operations that can be activated by a key stroke with the <Control>
and/or the <Meta> key held down. ``^'' denotes the <Control> key and ``#'' denotes the
<Meta> key in the following description. (The ``keys.obj'' file, distributed with tgif,
also summarizes the same information, but it is organized differently. This file can be
viewed with tgif, and if installed properly, it can be found in the same directory as the
``tgificon.obj'' file, mentioned in the FILES section of this document.)

^a select all
^b send selected objects to the back
^c copy selected objects into the cut buffer
^d duplicate selected objects
^e save/restore drawing mode
^f send selected objects to the front
^g group selected objects (the grouped object will be brought to the front)
^i instantiate a building-block object
^k pop back to (or return to) a higher level and close the symbol file (reverse of ^v)
^l align selected objects according to the current alignment settings
^n open a new un-named object file
^o open an object file to edit
^p print the current page (or export in XBM, XPM, GIF, HTML, PDF, EPS, or PS formats)
^q quit tgif
^r redraw the page
^s save the current object/symbol file
^t align selected objects to the grid according to the current alignment
^u ungroup selected objects
^v paste from the cut buffer
^w change the drawing mode to text
^x delete all selected objects
^y change domain
^z escape to driver
^, scroll left
^. scroll right
^- print the current page with a specified command

#a attach selected text objects to a selected non-text object as attributes
#b escape to driver
#c rotate selected objects counter-clockwise
#d decrement the grid size
#e send a token on a selected polyline
#f flash a selected polyline
#g show/un-show grid points
#h flip the selected objects horizontally
#i increment the grid size
#j hide the attribute names of the selected objects
#k change the drawing mode to select
#l distribute selected objects according to the current alignment
#m move/justify an attribute of a selected object
#n show all the attribute names of the selected objects
#o zoom out
#p import a .obj or a .sym file into the current file
#q change the drawing mode to polyline/open-spline
#r change the drawing mode to rectangle
#s escape to driver
#t detach all the attributes of the selected objects
#u undo
#v flip the selected objects vertically
#w rotate the selected objects clockwise
#x escape to driver
#y escape to driver
#z zoom in
#9 create a user-specified arc (12 o'clock position is 0 degree)
#0 update the selected objects according to current settings
#, scroll up
#. scroll down
#- show all the attributes of the selected objects
#[ align the left sides of objects
#= align the horizontal centers of objects
#] align the right sides of objects
#{ align the top sides of objects
#+ align the vertical centers of objects
#} align the bottom sides of objects
#" make the selected polygon regular (fit the original bounding box)
#% set the percent print reduction (if < 100%) or magnification (if > 100%)
#: go to default zoom
#` zoom out all the way so that the whole page is visible
#~ save selected objects in a new file
#; cut and/or magnify a selected bitmap/pixmap object
#_ abut selected objects horizontally
#| abut selected objects vertically
## break up text objects into single character text objects
#^ scroll to the origin set by SaveOrigin()
#@ toggle between constrained and unconstrained move (stretch) modes
#$ change the drawing mode to select vertices
#& align selected objects to the paper according to the current alignment
#* redo
#( import an Encapsulated PostScript file
#) scale selected objects by specifying X and Y scaling factors
#< lock the selected objects (can't be moved, stretched, flipped, or rotated)
#> unlock the selected objects

^#a add points to the selected poly or spline
^#b change the text style to bold
^#c change to center justified text
^#d delete points from the selected poly or spline
^#e change the drawing mode to rounded-corner rectangles
^#f reverse-video the selected bitmap objects
^#g toggle snapping to the grid points
^#h hide all attributes of the selected objects
^#i make the selected object iconic
^#j make the selected icon object a grouped object
^#k select color or black-and-white output
^#l change to left justified text
^#m make the selected object symbolic
^#n make the selected symbol object a grouped object
^#o change the text style to roman
^#p change the text style to bold-italic
^#q change the drawing mode to polygon/closed-spline
^#r change to right justified text
^#s save the file under a new name
^#t change the text style to italic
^#u update iconic representations of selected objects
^#v change the drawing mode to oval
^#w toggle between poly and spline
^#x cycle among the various output file formats
^#y push into (or edit) the definition part of a building-block (icon) object
^#z change the drawing mode to arcs
^#. import an X11 bitmap file
^#, import an X11 pixmap file
^#- toggle between English and Metric grid systems
^#= repeat the last Find command

SHORTCUTS

The user can define single character shortcut keys to emulate the function of the non-
alphanumeric key presses to activate commands. This is done through the use of the
Tgif.ShortCuts X default. (Please note that these shortcut keys are only active when the
drawing mode is not set to the text mode.) The Tgif.ShortCuts consists of a list of
items, each of which specifies the bindings between a key (may be case sensitive) and a
command. The items are separated by blanks, and each item is interpreted as follows. It
consists of two parts, KEY and COMMAND, which are concatenated together with a ':'
character. The format of the KEY part is one of :<Key>x, !<Key>x, or <Key>x (here the
character 'x' is used as an example; furthermore, the substring <Key> must be spelled
exactly the way it appears here). The first 2 formats are equivalent, they specify the
lower case x; the 3rd format specifies both the characters 'x' and 'X'. The COMMAND part
is a string that matches strings in tgif's popup menus with space characters removed
(exceptions are noted below). This is illustrated by the following example. In the Edit
menu, two of the entries are,

"Delete ^x"
"SelectAll ^a"

which means that <Control>x activates and Delete() command, and <Control>a activates the
SelectAll() command. Therefore, both Delete() and SelectAll() are valid names for the
COMMAND part of a shortcut specification. To complete the example, the following line can
be used to bind the lower case 'x' to Delete() and 'a' or 'A' to SelectAll():

Tgif.ShortCuts: !<Key>x:Delete() \n\
<Key>a:SelectAll()

For more examples, please see the sample X defaults file, tgif.Xdefaults, included in the
tgif distribution.

Here is a list of exceptions where the COMMAND does not match a command name in a menu
entry. The left entry is a proper COMMAND name, and the right is a list of strings that's
shown in popup menus which the COMMAND would correspond to.

CyclePrintFormat() Printer, LaTeXFig, RawPSFile, XBitmap, TextFile, EPSI, GIF/ISMAP,
TiffEPSI, NetList
ToggleBW/ColorPS() BlkWhtPS, ColorPS
ToggleGridSystem() EnglishGrid, MetricGrid
ToggleMapShown() ShowBit/Pixmap, HideBit/Pixmap
ToggleUseGrayScale() UseGrayScale, NoGrayScale
ToggleMoveMode() ConstMove, UnConstMove
ToggleShowMeasurement() ShowMeasurement, HideMeasurement

ToggleLineType() (advances between different curved shapes)
ScrollPageUp() (scroll up a window full)
ScrollPageDown() (scroll down a window full)
ScrollPageLeft() (scroll left a window full)
ScrollPageRight() (scroll right a window full)
FreeHandMode() (change the drawing mode to freehand poly/open-spline)
CenterAnEndPoint() (move an endpoint of a polyline object to the center of another
object)
ToggleNamedAttrShown(<x>=) (toggle name shown for the attribute <x>)
ToggleSmoothHinge() (convert smooth to hinge and hinge to smooth points)
ToggleShowMenubar() ShowMenubar, HideMenubar
ToggleShowStatus() ShowStatus, HideStatus
ToggleShowMode() ShowMode, HideMode
ToggleOneMotionSelMove() OneMotionSelMove, ClickSelClickMove
ToggleHyperSpace() GoHyperSpace, LeaveHyperSpace
ImportOtherFileType(<x>) (import using a filter named <x>)
BrowseOtherType(<x>) (browse using a filter named <x>)
PrintSelectedObjs() (print selected objects)

In addition to the above list, the following are also valid COMMAND names (having the
obvious meaning): ScrollLeft(), ScrollRight(), ScrollUp(), ScrollDown(), SelectMode(),
DrawText(), DrawBox(), DrawOval(), DrawPoly(), DrawPolygon(), DrawRCBox(), DrawArc(), and
SelectVertexMode().

COLORS AND COLORMAPS

In most X environments, only 256 colors can be displayed at once. In these environment,
if an application needs 128 colors and another application needs a totally different 129
colors, both applications can not be displayed at once with all the colors they want. X
solves the problem by allowing applications to use their own colormaps (known as private
colormaps). Each private colormap can have at most 256 colors. There is also a shared
colormap available for applications that do not wish to use private colormaps. The main
problem with using private colormaps is that a user will see the the well-known colormap
flashing phenomenon when he/she switches in and out of applications that use private
colormaps.

Tgif uses the shared colormap initially. When it needs more color than what is available
in the shared colormap, it will use a private colormap automatically. When tgif no longer
needs the extra colors, it does not automatically revert to using the shared colormap
because it needs to be able to undo operations that use the extra colors. If one does no
longer needs the objects in the undo buffer, one can select FlushUndoBuffer() from the
Edit Menu to flush the undo buffer. At this point, tgif will attempt to use the shared
colormap to avoid the colormap flashing problem. If one often uses XPM and GIF objects,
one can bind the <Shift>f key to the FlushUndoBuffer() operation by setting the following
X default and uses the <Shift>f key to regain entries in the colormap when an XPM/GIF
object is deleted:

Tgif.ShortCuts: !<Key>F:FlushUndoBuffer()

Even when a private colormap is used, only 256 colors can be used at once. Therefore, it
is not possible to import two 256-colors GIF files into the same drawing unless the colors
are somehow reduced to fit in the 256-colors colormap. This can be done through dithering
which is described in the IMPORT RASTER GRAPHICS section below.

IMPORT RASTER GRAPHICS

The native raster graphics formats that tgif supports are the XBM and XPM formats. In
order to import color raster graphics file of another format, tgif can work with external
tools that can convert non-XPM format files to an XPM files. A popular raster format
conversion toolkit is the pbmplus(1) (also known as the netpbm(1)) toolkit. It can
convert a GIF file (e.g., "foo.gif") to an XPM file (e.g., "foo.xpm") with the following
command (giftopnm is in netpbm; an earlier version of it called giftoppm exists in
pbmplus):

giftopnm foo.gif | ppmtoxpm > foo.xpm

When working with tgif, a GIF file name will be supplied by tgif and the output of
ppmtoxpm will be directly read by tgif through a pipe; therefore, the previous sequence is
replaced by an X default containing the following form (which happens to be the default
setting for the Tgif.GifToXpm X default):

giftopnm %s | ppmtoxpm

The "%s" is to be replaced by a GIF file name. The above is referred to as a filter.

To be able to import other types of raster graphics files, one can use
Tgif.MaxImportFilters and Tgif.ImportFilter# X defaults to specify additional filters.
The following example adds a JPEG filter:

Tgif.MaxImportFilters: 1
Tgif.ImportFilter0: \n\
JPEG-222 jpg;jpeg \n\
djpeg -gif -colors 222 %s | \n\
giftopnm | ppmtoxpm

The "JPEG-222" above is the name given to the filter (must not contain any space
character). The "jpg;jpeg" are possible file extensions separated by semicolons. The
rest is the filter specification. The djpeg(1) program is part of the libjpeg
distribution. It can convert a JPEG file to a GIF file. The above filter also restrict
the output to have a maximum of 222 colors. (The 222 is chosen arbitrarily. Many XPM
files use some ``standard'' 32 colors, so one may want to leave room form them.)

To invoke a filter, one can select ImportOtherFile() or BrowseOther() commands from the
File Menu. This will bring up a dialogbox listing the available filters by their names
(e.g., "JPEG-222"). After selecting a filter, tgif continues in a similar manner as with
invoking ImportXPixmap() or BrowseXPixmap() commands from the File Menu.

The above example is not suitable for the BrowseOther() command because only 256 colors
can be used in a drawing (as explained in the COLORS AND COLORMAPS section above). In
order for BrowseOther() to work well, one can use dithering to represent an image with a
dithered image that only uses a set of standard colors. The example below uses ppmdither
from the pbmplus/netpbm toolkit:

Tgif.MaxImportFilters: 2
Tgif.ImportFilter0: \n\
JPEG-222 jpg;jpeg \n\
djpeg -gif -colors 222 %s | \n\
giftopnm | ppmtoxpm
Tgif.ImportFilter1: \n\
JPEG-dithered jpg;jpeg \n\
djpeg -gif %s | \n\
giftopnm | ppmdither | ppmtoxpm

If one is working with one JPEG image, one can select ImportOtherFile() then select
"JPEG-222" to get as many as 222 colors. If one is browsing for JPEG images, one can
select BrowseOther() then select "JPEG-dithered".

OBJECT NAMES

If an object contains an attribute (please see the ATTRIBUTES sections below for details)
whose name is the string "name" (case-sensitive), the value part of the attribute is the
name of the object. Subobject of a composite object can be named using a path, e.g.,
<t>!<s1>!<s2>!..., where <t> is the name of a top-level object which directly contains
<s1> which directly contains <s2>, etc. !* refers to the currently selected object (if
more than one object is selected, the top-most object in the stacking order is used).
!*<s1>!<s2> names the <s2> subobject of the <s1> subobject of the currently selected
object.

The following is not fully supported, yet (only the #<page> form is supported at this
time). Every object in a tgif file can be uniquely named using the notation
#<page>!<path>, where <page> can be a string that specifies the name of a page or
#<number> which specifies a page number. The <path> is described in the previous
paragraph. If an object o1 is referenced by another object o2 within the same file (no
file name or URL is specified before #) and <page> is omitted, then o1 must be on the same
page as o2. If a file name or URL is specified before # and <page> is omitted, then o1
must be on the first page.

ATTRIBUTES

Attributes are text strings of the form name=value or value which are attached to either
the current drawing or any non-text objects. An attribute attached to the current drawing
is called a file attribute; otherwise, it is a regular attribute. Attributes can be
attached and detached from these objects except in the following case:

Attributes appearing in the symbol object in a building-block object file can not
be detached when the building-block object is instantiated. These attributes are
considered to be the ``inherited'' attributes of the icon object. (If it is really
necessary to detach inherited attributes of an icon object, the icon object can be
``de-iconified'' by using UnMakeIconic() in the Special Menu to make it a grouped
object; then the attributes can be detached.)

A file attribute is always invisible. For a regular attribute, the user has control over
which part of the attribute is displayed. An entire attribute can be made invisible, or
only its name can be made invisible (accomplished through the commands under the special
menu, such as #m, #n, #j, #-, and ^#h).

TELEPORT/HYPERJUMP

Tgif provides the mechanism to travel between .obj and .sym files. If the middle mouse
button is clicked on an object with the <Shift> key held down (or double-clicking such an
object), tgif looks for an attribute named warp_to (by default) or href of that object.
The only difference between warp_to and href is that ".obj" is automatically appended to
the value of a warp_to attribute while the value of a href attribute is taken as is.
(Please note that warp_to is obsolete now. It is still supported for the sake of
compatibility.) If such an attribute is found, the value part of the attribute is
interpreted as the name of a .obj file to travel to. (If tgif is in the hyperspace mode,
then clicking the left mouse button has the same effect.) If there are multiple href
attributes on the object, but are in different colors, tgif will use the one that has the
same color as the current color appearing in the Choice Window. If the current file is
modified, the user is prompted to save the file before traveling to the next file. If the
value part of the href attribute starts with the '/' character, the value is treated as an
absolute file name; otherwise, it is treated as a relative file name.

HYPERSPACE

Tgif provides a hyperspace mode to facilitate traveling between .obj files. The
hyperspace mode is entered when GoHyperSpace() is selected from the Navigate Menu. In
hyperspace mode, the little window below the Message Window will show a little space ship.
The hyperspace mode is also automatically entered when a remote URL is opened (unless the
Tgif.AutoHyperSpaceOnRemote X default is set to false).

In the hyperspace mode, certain objects are considered hot-links. When the cursor is
placed on top of these object, it will change from a pointer to a hand to indicate that
clicking on the left mouse button will invoke some actions. An object is a hot-link if it
contains an attribute described in either the TELEPORT/HYPERJUMP, LAUNCH APPLICATIONS, or
INTERNAL COMMANDS section.

The hyperspace mode is exited when the drawing mode is changed or the LeaveHyperSpace() is
selected from the Navigate Menu.

LAUNCH APPLICATIONS

Tgif provides the mechanism to launch applications. If the middle mouse button is clicked
on an object with the <Shift> key held down (or double-clicking such an object), tgif
looks for an attribute named launch (by default) of that object. If such an attribute is
found, the value part of the attribute is interpreted as a sh(1) command to execute. Same
color rule applies as described in the TELEPORT/HYPERJUMP section above. If the command
ends with the '&' character, tgif forks itself (what actual happens depends on whether the
_BACKGROUND_DONT_FORK compiler flag is defined or not at compile time) and the command is
executed by the child process; otherwise, popen() is used to execute the command (in this
case, if the command hangs, there is no way provided to terminate the command, and tgif
will not be able to recover from it). Within the command, values of other attributes of
the same object can be used. The syntax is: $(attr), where attr is the name of another
attribute.

For example, if one wants to perform a man(1) function, one can draw a box; enter a line
of text "title=tgif"; enter another line of text "launch=xterm -rw -e man $(title)";
select all three objects using ^a keyboard command; attach the text strings to the box
using #a keyboard command; and launch the man(1) command by clicking the middle mouse
button on the box (or the text strings) with the <Shift> key held down. If one wants to
be more fancy, the box can be replaced by an X11 pixmap object; the 'launch' attribute can
be made invisible; and the 'title' attribute can be center justified and with its name
hidden using the #m keyboard command.

By default, launching of an application is disabled in the hyperspace mode for security
considerations (this can be overridden by the Tgif.AllowLaunchInHyperSpace X default
setting). If a lunch command is encountered in the hyperspace mode, the command is
displayed and the user is prompted to see if he/she wants to execute the command.

INTERNAL COMMANDS

Tgif provides the mechanism to execute internal commands. If the middle mouse button is
clicked on an object with the <Shift> key held down (or double-clicking such an object),
tgif looks for an attribute named exec (by default) of that object. If such an attribute
is found, the value part of the attribute is interpreted as a list of internal commands
(separated by semicolon) to execute. Same color rule applies as described in the
TELEPORT/HYPERJUMP section above. A command usually takes the form:

<cmd_name> ( <arg1>, <arg2>, ..., <argN> )

An argument of a command can be a string argument or a numeric argument. A string
argument must be enclosed in double-quotes. A numeric argument can be a numerical value
or a string of the form "$(x)", where x is the name of another attribute (this form is
referred as the substitution form). A string argument can also contain substitution form.
Please note that only one-level substitution are performed (the collection of internal
commands should be viewed as a simple scripting language and not a declaration language).

When an attribute is referenced in an internal command, the attribute name can be in the
form, <obj_name>.<string>, where <obj_name> must be in the form specified in the OBJECT
NAMES section above and <string> contains only alphanumeric characters and the underscore
('_') character. If the first 2 characters of an attribute name is "!.", the rest of the
attribute name names a file attribute. If the first 2 characters of an attribute name is
"!*", the rest of the attribute name names an attribute of the currently selected object
(if more than one object is selected, the top-most object in the stacking order is used).

Please note that lines that begin with "//" are treated as comments.

The following internal commands are supported:

launch(<attr_name>)
The value of the attribute specified by <attr_name> is interpreted as a sh(1)
command to execute. Please see the LAUNCH APPLICATIONS section above for more
details.

exec(<attr_name>)
The value of the attribute specified by <attr_name> is interpreted as an internal
command to execute. This is similar to a subroutine call. Please note that the
internal command is executed in the context of the top-level which contain the
attribute.

mktemp(<str>,<attr_name>)
This command makes a unique file name. The <str> argument is a template string,
e.g., "/tmp/TgifXXXXXX", and it requires at least two "/" in it. The result of
mktemp() is stored as the value of the attribute specified by <attr_name>. Please
see the man pages of the C library function on mktemp(3C) for more details. (If
tgif is compiled with the -D_USE_TMPFILE compiler option, then tempnam(3S) is used
instead.)

create_file_using_simple_template(<template>,<output>,<str>,<attr_name>)
The file specified by <template> is scanned for a line that matches <str>. When
such a line is found, that line is replaced by the value of the attribute specified
by <attr_name>. The result is put into the file specified as <output>.

update_eps_child(<eps_file_name>)
This only works if the object being executed is a composite object. If the object
has a component which is an imported EPS (Encapsulated PostScript) object, it is
replaced by the EPS file specified by <eps_file_name>. If the object does not
contain an EPS subobject, an EPS subobject is created.

update_xbm_child(<xbm_file_name>)
This only works if the object being executed is a composite object. If the object
has a component which is an imported XBM (X11 bitmap) object, it is replaced by the
XBM file specified by <xbm_file_name>. If the object does not contain an XBM
subobject, an XBM subobject is created.

update_xpm_child(<xpm_file_name>)
This only works if the object being executed is a composite object. If the object
has a component which is an imported XPM (X11 pixmap) object, it is replaced by the
XPM file specified by <xpm_file_name>. If the object does not contain an XPM
subobject, an XPM subobject is created.

delete_eps_child(<obj_name>)
This only works if the object named <obj_name> is a composite object. If the
object has a component which is an EPS (Encapsulated PostScript) object, it is
deleted. If the object does not contain an EPS subobject, no operation is
performed.

delete_xpm_child(<obj_name>)
This only works if the object named <obj_name> is a composite object. If the
object has a component which is an XPM (X11 pixmap) object, it is deleted. If the
object does not contain an XPM subobject, no operation is performed.

delete_xbm_child(<obj_name>)
This only works if the object named <obj_name> is a composite object. If the
object has a component which is an XBM (X11 bitmap) object, it is deleted. If the
object does not contain an XBM subobject, no operation is performed.

flip_deck(<times>,<frames_per_second>,<style>)
This only works if the object being executed is a composite object and all
subobjects of the composite object are X11 bitmap or X11 pixmap objects and have
identical positions and sizes. The <times> argument specifies the number of times
the deck is flipped. It can be a number or the string "infinite". The
<frames_per_second> argument must be a number between 1 and 60. The <style>
argument can be either "linear" or "ping_pong". When this command is being
executed, any mouse button click or key click aborts command execution.

read_file_into_attr(<file_name>,<attr_name>)
This command reads a file into an attribute. The <file_name> argument names a
file, e.g., "/tmp/foo". The content of the file is read as the value of the
attribute specified by <attr_name>. If the file can not be opened for read, the
attribute's value is set to an empty string.

write_attr_into_file(<attr_name>,<file_name>)
This command writes the value of an attribute into a file. The <file_name>
argument names a file, e.g., "/tmp/foo". The value of the attribute specified by
<attr_name> is written into <file_name>.

append_attr_into_file(<attr_name>,<file_name>)
This command appends the value of an attribute into a file. The <file_name>
argument names a file, e.g., "/tmp/foo". The value of the attribute specified by
<attr_name> is appended into <file_name>.

select_obj_by_name(<obj_name>)
This command silently (no highlighting handles) selects an object named <obj_name>.
Please see the OBJECT NAMES section above for the specification of object names.

select_top_obj()
This command silently (no highlighting handles) selects the top object. This
command fails if there is no object in the current page.

delete_selected_obj()
This command deletes all selected objects. This command fails if no object is
selected.

unselect_all_obj()
This command de-selects all selected objects. If the select_obj_by_name() command
is used, this command must be used eventually.

move_selected_obj_relative(<dx>,<dy>)
This command moves the selected object by <dx> absolute units in the x direction
and <dy> absolute units in the y direction.

repeat(<cmd_attr_name>,<times>)
This command executes the internal command in the <cmd_attr_name> attribute <times>
times.

hyperjump(<attr_name>)
This command teleports to the file name or URL name found in the <attr_name>
attribute.

make_cgi_query(<dest_attr_name>,<url_name>,<list_attr_name>)
This command constructs an URL in the Common Gateway Interface (CGI) format in the
<dest_attr_name> attribute. <url_name> names the CGI server script and
<list_attr_name> names an attribute whose value are comma-separated attribute
names. For example, if an object has the following attributes:

attr_list=last_name,first_name
last_name=Cheng
first_name=Bill
final_url=
exec=make_cgi_query(final_url,
http://bourbon.usc.edu:8001/cgi-bin/test-cgi,
attr_list)

Executing this object will construct the following string in final_url:

http://bourbon.usc.edu:8001/cgi-bin/test-cgi?last_name=Cheng&first_name=Bill

An subsequent hyperjump(final_url) command can be invoked to execute the
corresponding "test-cgi" CGI server script with the last_name and first_name
arguments.

For a detailed description of CGI scripts, the reader is referred to [2].

wait_click(<cursor_name>,<grab>,<attr_name>)
This command displays the <cursor_name> cursor and waits for the user to click a
mouse button. If <cursor_name> is the string NULL (case-sensitive), the cursor
will not change. If <Btn1> is clicked, the command terminates and 1 is placed in
<attr_name>. If <Btn2> is clicked, 2 is placed in <attr_name>, etc. If <grab> set
to TRUE (case-sensitive), then the mouse is grabbed by tgif. Valid <cursor_name>
can be found in <X11/cursorfont.h> (without the XC_ prefix).

sleep(<cursor_name>,<ms_interval>)
This command displays the <cursor_name> cursor and waits for <ms_interval>
milliseconds to elapse. If <cursor_name> is the string NULL (case-sensitive), the
cursor will not change. This command can be interrupted (and aborted) by any mouse
clicks or key strokes. Valid <cursor_name> can be found in <X11/cursorfont.h>
(without the XC_ prefix).

begin_animate()
This command is used to start an animation sequence (using double-buffering).
Please note that, by default, tgif prepares for undo/redo. For a long animation
sequence, the undo/redo records may take up a lot of memory. In this case,
disable_undo() (described below) should be used before this command.

end_animate()
This command is used to terminate an animation sequence.

set_redraw(<true_or_false>)
This command is used to temporarily disable redraw if <true_or_false> is FALSE
(case-sensitive) when tgif is in the animation mode (turned on by begin_animate()).
If a shuffle_obj_to_top() or a shuffle_obj_to_bottom() command is used before a
move command, set_redraw(FALSE) and set_redraw(TRUE) should be used immediately
before and immediately after, respectively, the shuffle_obj_to_top() or
shuffle_obj_to_bottom() command.

set_selected_obj_color(<color_str>)
This command changes the color of the selected object to <color_str>. If no object
is selected, the current color will be changed to <color_str>.

set_selected_obj_fill(<fill_index>)
This command changes the fill pattern of the selected object to <fill_index>, which
must be between 0 (for no fill) and 31. If no object is selected, the current fill
pattern will be changed to <fill_index>.

set_selected_obj_pen(<pen_index>)
This command changes the pen of the selected object to <pen_index>, which must be
between 0 (for no pen) and 31. If no object is selected, the current pen will be
changed to <pen_index>.

set_selected_obj_line_width(<width>,<arrow_w>,<arrow_h>)
This command changes the line width, arrow width, and arrow height of the selected
object to <width>, <arrow_w>, and <arrow_h>, respectively. If <arrow_w> or
<arrow_h> is -1, the arrow width or arrow height, respectively, is not changed. If
no object is selected, the current line width will be changed to the one that
matches <width>, <arrow_w>, and <arrow_h> most closely. (Closeness is measured
such that the difference in width is counted 10 times the difference in arrow width
and arrow height.)

set_selected_obj_spline(<spline_type>)
This command changes the spline type of the selected object to <spline_type>, which
can be straight, spline, interpolated, or structured. If no object is selected,
the current spline type will be changed to <spline_type>.

set_selected_obj_arrow(<arrow_type>)
This command changes the arrow type of the selected object to <arrow_type>, which
can be none, right, left, or double. If no object is selected, the current arrow
type will be changed to <arrow_type>.

set_selected_obj_dash(<dash_index>)
This command changes the dash type of the selected object to <dash_index>, which
must be between 0 (solid) and 8. If no object is selected, the current dash type
will be changed to <dash_index>.

set_selected_obj_trans_pat(<trans_pat>)
This command changes selected object to have opaque pattern if <trans_pat> is 0; it
changes selected object to have transparent pattern if <trans_pat> is any other
numeric value. If no object is selected, the current fill and pen pattern will be
opaque if <trans_pat> is 0 and will be transparent if <trans_pat> is any other
numeric value.

set_selected_obj_rcb_radius(<rcb_radius>)
This command changes the rcbox radius of the selected object to <rcb_radius>, which
must be greater or equal to 4. If no object is selected, the current rcbox radius
will be changed to <rcb_radius>.

set_selected_text_vspace(<vspace>)
This command changes the text vspace of the selected object to <vspace>. If no
object is selected, the current text vspace will be changed to <vspace>.

set_selected_text_just(<justification>)
This command changes the text justification of the selected object to
<justification>, which can be left, center, or right. If no object is selected,
the current text justification will be changed to <justification>.

set_selected_text_font(<ps_font_name>)
This command changes the font and text style of the selected object to match
<ps_font_name>. Examples of valid <ps_font_name> can be found when one selects
CopyProperties() from the Properties Menu. The item listed under text font is a
valid <ps_font_name>. If no object is selected, the current font and text style
will be changed to match <ps_font_name>. This command fails if no match can be
found.

set_selected_text_style(<textstyle>)
This command changes the text style of the selected object to <textstyle>, which
can be r (for roman), b (for bold), i (for italic), or bi (for bold-italic). If no
object is selected, the current text style will be changed to <textstyle>.

set_selected_text_size(<size>)
This command changes the text size of the selected object to <size>. If <size>
ends with the substring "pt", then point size is used instead of text size. If
such as size cannot be found in the Size Menu, the closest size in the Size Menu
will be used. If no object is selected, the current text size will be changed to
<size> or the closest size.

set_selected_text_underline(<underline>)
This command removes text underline from the selected object if <underline> is 0;
it underlines text in the selected object if <underline> is any other numeric
value. If no object is selected, the current text underline will be changed
accordingly.

set_selected_text_overline(<overline>)
This command removes text overline from the selected object if <overline> is 0; it
overlines text in the selected object if <overline> is any other numeric value. If
no object is selected, the current text overline will be changed accordingly.

inc(<attr_name>,<expr>)
This command increment <attr_name> by the expression <expr>. Both the value of
<attr_name> and <expr> must be integers. Please see the ARITHMETIC EXPRESSIONS
section below for details about expressions.

dec(<attr_name>,<expr>)
This command decrement <attr_name> by <expr>. Both the value of <attr_name> and
<expr> must be integers.

shuffle_obj_to_top(<obj_name>)
This command move <obj_name> to the top. If <obj_name> is a subobject, it is
raised to the top, relative to its siblings. This command is useful in animation
where a selected frame (subobject) can be raised to the top.

shuffle_obj_to_bottom(<obj_name>)
This command move <obj_name> to the bottom. If <obj_name> is a subobject, it is
dropped to the bottom, relative to its siblings. This command is useful in
animation where a selected frame (subobject) can be dropped to the bottom.

disable_undo()
This command cleans up the undo/redo records and disable undo (and stop recording
undo/redo information). The original history depth is saved away. This command
should be used before a long animation sequence.

enable_undo()
This command restores the history depth saved away by the disable_undo() command
and enables undo/redo. This command should be eventually used after disable_undo()
is called.

get_drawing_area(<ltx_attr>,<lty_attr>,<rbx_attr>,<rby_attr>)
This command stores the absolute coordinate of the current drawing area in the
specified attributes. <ltx_attr> stores the left-top X coordinate, <lty_attr>
stores the left-top Y coordinate, <rbx_attr> stores the right-bottom X coordinate,
and <rby_attr> stores the right-bottom Y coordinate.

get_selected_obj_bbox(<ltx_attr>,<lty_attr>,<rbx_attr>,<rby_attr>)
This command stores the absolute coordinate of the bounding box of the selected
object in the specified attributes. <ltx_attr> stores the left-top X coordinate,
<lty_attr> stores the left-top Y coordinate, <rbx_attr> stores the right-bottom X
coordinate, and <rby_attr> stores the right-bottom Y coordinate. The bounding box
is computed assuming that all lines are of width 0.

get_named_obj_bbox(<obj_name>,<ltx_attr>,<lty_attr>,<rbx_attr>,<rby_attr>)
This command stores the absolute coordinate of the bounding box of the object named
<obj_name> in the specified attributes. <ltx_attr> stores the left-top X
coordinate, <lty_attr> stores the left-top Y coordinate, <rbx_attr> stores the
right-bottom X coordinate, and <rby_attr> stores the right-bottom Y coordinate.
The bounding box is computed assuming that all lines are of width 0.

move_selected_obj_absolute(<ltx>,<lty>)
This command moves left-top corner of the selected object to (<ltx>,<lty>).

assign(<attr_name>,<expr>)
This command assigns <expr> to the attribute specified by <attr_name>. <expr> must
be evaluated to a numeric value.

strcpy(<attr_name>,<string>)
This command copies <string> into the attribute specified by <attr_name>.

copy_string_to_cut_buffer(<string>)
This command copies <string> into the cut buffer.

strcat(<attr_name>,<string>)
This command appends <string> to the attribute specified by <attr_name>.

while(<expr>,<cmd_attr_name>)
This command keeps executing the internal command in <cmd_attr_name> until <expr>
evaluates to 0.

if(<expr>,<then_cmd_attr_name>,<else_cmd_attr_name>)
If <expr> evaluates to 0, the internal command in <else_cmd_attr_name> is executed;
otherwise, the internal command in <then_cmd_attr_name> is executed.
<then_cmd_attr_name> or <else_cmd_attr_name> can be the string NULL (case-
sensitive); in this case, no corresponding action is taken.

get_current_file(<attr_name>)
This command stores the full path name of the current file in <attr_name>.

get_current_export_file(<attr_name>)
This command stores the full path name of the output (print/export) file in
<attr_name>.

get_current_dir(<attr_name>)
This command stores the current directory in <attr_name>.

getenv(<attr_name>,<env_var_name>)
This command stores the environment variable named <env_var_name> in <attr_name>.

strlen(<attr_name>,<string>)
This command assigns the number of characters in <string> to <attr_name>.

substr(<attr_name>,<string>,<start_index>,<length>)
This command copies <length> characters, starting from the character index
<start_index>, of <string> into <attr_name>. The <start_index> is zero-based.

strstr(<attr_name>,<string>,<sub_string>)
This command finds the first occurrence of <sub_string> in <string> and copies
<sub_string> and the rest of the string into <attr_name>.

strrstr(<attr_name>,<string>,<sub_string>)
This command finds the last occurrence of <sub_string> in <string> and copies
<sub_string> and the rest of the string into <attr_name>.

unmake_selected_obj_iconic()
This command has the same effect as selecting UnMakeIconic() from the Special Menu
except that at least one object must be selected already.

hyperjump_then_exec(<attr_name>,<attr_name_to_exec>)
This command teleports to the file name or URL name found in the <attr_name>
attribute then executes the internal command specified by the <attr_name_to_exec>
attribute in the new file.

show_attr(<attr_name>)
This command makes the <attr_name> attribute visible.

hide_attr(<attr_name>)
This command makes the <attr_name> attribute invisible.

show_attr_name(<attr_name>)
This command makes the name part of the <attr_name> attribute visible.

hide_attr_name(<attr_name>)
This command makes the name part of the <attr_name> attribute invisible.

show_value(<attr_value>)
This command makes the attribute whose name is empty and whose value is
<attr_value> visible.

hide_value(<attr_value>)
This command makes the attribute whose name is empty and whose value is
<attr_value> invisible.

get_attr_bbox(<ltx_attr>,<lty_attr>,<rbx_attr>,<rby_attr>,<attr_name>)
This command stores the absolute coordinate of the bounding box of the <attr_name>
attribute in the specified attributes. <ltx_attr> stores the left-top X
coordinate, <lty_attr> stores the left-top Y coordinate, <rbx_attr> stores the
right-bottom X coordinate, and <rby_attr> stores the right-bottom Y coordinate.
The bounding box is computed assuming that all lines are of width 0.

size_selected_obj_absolute(<abs_w>,<abs_h>)
This command stretches the right-bottom corner of the selected object so that its
width becomes <abs_w> and height becomes <abs_h>.

size_named_obj_absolute(<obj_name>,<abs_w>,<abs_h>)
This command stretches the right-bottom corner of the object named <obj_name> so
that its width becomes <abs_w> and height becomes <abs_h>.

message_box(<attr_name>,<msg>,<title>,<style>)
This command displays a messagebox with <title> as the title and <msg> as the
message. <style> can be the string "info", "ync", "yn", or "stop". The messagebox
display an OK button for the "info" or "stop" styles, YES/NO/CANCEL buttons for the
"ync" style, YES/NO buttons for the "yn" style. When the user click a button in
the messagebox, the name of the button will be placed in <attr_name>. If the user
cancels the messagebox by typing the <ESC> key, <attr_name> will be set to the
string "CANCEL". If <attr_name> is the string NULL (case-sensitive), the
information about which button is clicked is not written anywhere. If <title> is
the string NULL, Tgif will be the title for the messagebox.

get_user_input(<attr_name>,<msg1>,<msg2>)
This command displays a dialogbox with <msg1> in the first line and <msg2> in the
second line. If <msg2> is the string "USE_CURRENT_DIR", the second line displays
the current directory. The user can type in a line in the dialogbox which get
placed in <attr_name>. If the user cancels the dialog by typing the <ESC> key,
<attr_name> will be set to the empty string.

add_attr_to_selected_obj(<attr_name>,<attr_value>,<abs_x>,<abs_y>)
This command adds <attr_name>=<attr_value> to a selected object and place the
attribute at (<abs_x>,<abs_y>). If <attr_name> is the string NULL (case-
sensitive), the attribute's name will be the empty string. If <abs_x> and <abs_y>
are both NULL (case-sensitive), the attribute will be placed below the lower left
corner of the object. If <attr_name> starts with "!.", a file attribute will be
added.

delete_attr_from_selected_obj(<attr_name>)
This command deletes an attribute named <attr_name> from a selected object. If
<attr_name> starts with "!.", a file attribute will be deleted.

user_end_an_edge(<attr_name>,<abs_x>,<abs_y>)
This command starts a polyline/open-spline at (<abs_x>,<abs_y>), switches the
drawing mode to the draw polyline/open-spline, and lets the user finish the
polyline/open-spline. If the endpoint falls in an object having an attribute
type=port, that object's name will be placed in <attr_name>, if <attr_name> is not
the string NULL (case-sensitive).

user_draw_an_edge(<start_attr_name>,<end_attr_name>)
This command switches the drawing mode to the draw polyline/open-spline and lets
the user draw a polyline/open-spline. If the first endpoint falls in an object
having an attribute type=port, that object's name will be placed in
<start_attr_name>, if <end_attr_name> is not the string NULL (case-sensitive). If
the last endpoint falls in an object having an attribute type=port, that object's
name will be placed in <end_attr_name>, if <attr_name> is not the string NULL
(case-sensitive).

get_a_poly_vertex_absolute(<x_attr_name>,<y_attr_name>,<obj_name>,<index>)
This command stores the absolute coordinate of the <index>th vertex of <obj_name>
in attributes specified by <x_attr_name> and <y_attr_name>. The object specified
by <obj_name> must be either a poly/open-spline or a polygon/closed-spline object.

move_a_poly_vertex_absolute(<obj_name>,<index>,<abs_x>,<abs_y>)
This command moves the <index>th vertex of <obj_name> to the absolute coordinate
(<abs_x>,<abs_y>). The object specified by <obj_name> must be either a poly/open-
spline or a polygon/closed-spline object.

post_attr_and_get_cgi_result(<url_attr>,<query_attr>,<result_attr>)
This command makes an HTTP request using the POST method. <url_attr> names the
attribute that contains the URL (which usually names a CGI server script).
<query_attr> names the attribute whose value is the data to be posted.
<result_attr> names the attribute for receiving the results. For example, if an
object has the following attributes:

url=http://bourbon.usc.edu:8001/cgi-bin/echo-post
query=Hello World!
result=
exec=post_attr_and_get_cgi_result(url,query,result)

executing this object will post "Hello World!" to the specified CGI script. In
this case, the result of executing the script just echoes "Hello World!" back
(along with some other bookkeeping information).

navigate_back()
This command performs the same operation as if the NavigateBack() is selected from
the Navigate Menu.

stop() This command stops the execution of all internal commands.

sqrt(<attr_name>,<expr>)
This command assigns the square-root of <expr> to <attr_name>. <expr> must be
evaluated to a non-negative numeric value.

random(<attr_name>)
This command assigns a random integer to <attr_name> using the C library function
rand(). 0 is used as a seed for the random number generator.

srand48(<use_cur_time_as_seed>)
This command seeds the random generator used by the C library function drand48().
If <use_cur_time_as_seed> is 0, 0 will be used as a seed. Otherwise, the current
time will be used as a seed.

drand48(<attr_name>)
This command assigns a floating pointer number between 0.0 and 1.0 to <attr_name>
using the C library function drand48().

round(<attr_name>,<expr>)
This command assigns the round of <expr> to <attr_name>.

redraw_obj(<obj_name>)
This command redraws the area occupied by <obj_name>.

redraw_drawing_area()
This command redraws the whole drawing area (visible through the Canvas Window).

itox(<attr_name>,<digits>,<expr>)
This command assigns <attr_name> to be the hex value of <expr>. <digits> (which
must be between 1 and 8, inclusive) is the final width of the hex value (zeroes are
added on the left).

for_i(<attr_name>,<min_val>,<max_val>,<increment>,<cmd_attr_name>)
This command is the same as the following sequence of commands:

assign(<attr_name>,<min_val>);
while($(<attr_name>) <= <max_val>,loop)

where loop has the following value:

exec(<cmd_attr_name>);
inc(<attr_name>,<increment>)

Please note that <min_val>, <max_val>, and <increment> are only evaluated once
prior the execution of this command.

set_file_not_modified()
This command sets the file modified flag to false.

new_id(<attr_name>)
This command generates an object ID, which is unique in the current drawing, and
stores it in <attr_name>.

rotate_selected_obj(<angle>)
This command rotates the selected object by <angle> degrees. Positive angle is
clockwise.

call_simple_shortcut(<shortcut_name>)
This command calls a shortcut named <shortcut_name> which takes no arguments.
Please see the SHORTCUTS section for a description of shortcuts.

call_one_arg_shortcut(<shortcut_name>,<arg>)
This command calls a shortcut named <shortcut_name> that takes one argument and
passes <arg> to it. Please see the SHORTCUTS section for a description of
shortcuts.

substitute_attr(<attr_name>,<src_attr_name>,<replace_attr_name>,<pattern_str>)
This command replaces occurrences of <pattern_str> in the value part of the
attribute specified by <src_attr_name> by the value of the attribute specified by
<replace_attr_name> and write the result into the attribute specified by
<attr_name>.

get_file_size(<attr_name>,<file_name>)
This command puts the size of file specified by <file_name> in the attribute
specified by <attr_name>.

is_file(<attr_name>,<file_name>)
This command puts a "1" in the attribute specified by <attr_name> if the file
specified by <file_name> exists. It puts a "0" otherwise.

index(<attr_name>,<string>,<sub_string>)
This command finds the first occurrence of <sub_string> in <string> and copies the
zero-based index into <attr_name>.

rindex(<attr_name>,<string>,<sub_string>)
This command finds the last occurrence of <sub_string> in <string> and copies the
zero-based index into <attr_name>.

get_number_of_lines_in_attr(<result_attr>,<attr_name>)
This command counts the number of lines in the attribute specified by <attr_name>
and writes the count into <result_attr>.

get_line_in_attr(<result_attr>,<attr_name>,<line_number>)
This command copies the nth line of the attribute specified by <attr_name> into
<result_attr>, where n is a zero-based index specified by <line_number>.

trim(<attr_name>)
This command removes leading and trailing blank characters from the attribute
specified by <attr_name>.

is_attr(<result_attr>,<attr_name>)
This command writes a "1" into <result_attr> if the attribute specified by
<attr_name> exists. It writes a "0" into <result_attr> otherwise.

find_obj_names(<result_attr>,<obj_name>,<attr_name_value>)
This command finds all objects that are direct sub-objects of the object specified
by <obj_name> and writes their names into <result_attr>. If <obj_name> is an empty
string, all top-level objects are scanned.

<attr_name_value> specifies a filter for the objects. If <attr_name_value> is the
empty string, all qualifying objects are selected. If <attr_name_value> is of the
form "<string>=*", an object is selected if it has an attribute named <string>. If
<attr_name_value> is of the form "<string>=<value>", an object is selected if it
has an attribute named <string> and its corresponding value is <value>. If
<attr_name_value> does not contain the '=' character, an object is selected if it
has an attribute whose name is empty and the corresponding value is identical to
<attr_name_value>.

If n objects are matched, the attribute specified by <result_attr> is updated with
n+1 lines. The value of the zeroth line becomes n and the object names becomes
lines 1 through n of <result_attr>. The get_line_in_attr() internal command can be
used to retrieve the object names.

find_obj_names_on_all_pages(<result_attr>,<attr_name_value>)
This command is similar to find_obj_names() above, except that it only finds top-
level objects on all pages. The result is written into <result_attr>. For a
multi-page file, a top-level object name <name> will be written into <result_attr>
as ##<page_num>!<name>. For a single-page file, this command behaves exactly the
same as find_obj_names(<result_attr,"",<attr_name_value>).

tg2_find_obj_names_on_all_pages(<result_attr>,<attr_name_value>)
This command is identical to find_obj_names_on_all_pages() above, except that for a
multi-page file, a top-level object name <name> will be written into <result_attr>
as <name>_Page<page_num>.

tokenize(<result_attr>,<string>,<separator>)
This command breaks <string> into tokens which are separated by the <separator>
character and writes the tokens (in the same fashion as in the find_obj_names()
internal command above) into <result_attr>. <separator> must be a string of length
of 1 and it must not be the space character, the single-quote character, or the
double-quote character. If a token contains the separator character, the token can
be surrounded by a pair of single-quotes or double-quotes which are automatically
removed when this command is executed.

If n tokens are found, the attribute specified by <result_attr> is updated with n+1
lines. The value of the zeroth line becomes n and the tokens becomes lines 1
through n of <result_attr>. The get_line_in_attr() internal command can be used to
retrieve the tokens.

move_attr_relative(<attr_name>,<dx>,<dy>)
This command moves the attribute whose name is <attr_name> by <dx> absolute units
in the x direction and <dy> absolute units in the y direction.

get_number_of_vertices(<result_attr>,<obj_name>)
This command copies the number of vertices of the object specified by <obj_name>
into <result_attr>. The specified object must be a polyline (open-spline) or a
polygon (closed-spline).

is_obj_transformed(<result_attr>,<obj_name>)
This command writes a "1" into <result_attr> if the object specified by <obj_name>
is transformed (rotated or sheared). It writes a "0" into <result_attr> otherwise.

make_selected_obj_iconic(<sym_path>)
This command works like the MakeIconic() command from the Special Menu, except that
the user is not prompted for the name of the icon. Instead, <sym_path> is used to
specify the full path name of the icon.

get_tgif_version(<major_attr,minor_attr,patchlevel_attr,build_attr>)
This command writes tgif's major version number, minor version number, patchlevel,
and build information into <major_attr>, <minor_attr>, <patchlevel_attr> and
<build_attr>, respectively. If an argument is the string NULL (case-sensitive),
that information is skipped.

get_tgif_dir(<result_attr>)
This command writes "$HOME/.Tgif" into <result_attr> where $HOME is the home
directory of the user.

get_profile_string(<result_attr>,<section>,<key>,<def_value>,<ini_path>)
This command gets the value associated with the key specified by <key> from the
section specified by <section> in the file specified by the full path <ini_path>
and stores it into the attribute specified by <result_attr>. If there is not value
associated with the specified key, <def_value> is stored into <result_attr>. If
<key> is an empty string, all the key names in <section> of <ini_path> will be
written (in the same fashion as in the find_obj_names() internal command above)
into <result_attr>. If <section> is an empty string, all the section names in
<ini_path> will be written (in the same fashion as in the find_obj_names() internal
command above) into <result_attr>.

write_profile_string(<section>,<key>,<value>,<ini_path>)
This command sets the value associated with the key specified by <key> of the
section specified by <section> in the file specified by the full path <ini_path> to
be <value>. If <key> is an empty string, all key/value pairs in <section> of
<ini_path> will be cleared. <section> should not be an empty string.

select_additional_obj(<obj_name>)
This command silently (no highlighting handles) selects an additional object named
<obj_name>. Please see the OBJECT NAMES section above for the specification of
object names.

open_file(<file_number>,<file_name>,<file_mode>)
This command opens the file specified by <file_name> in the mode specified by
<file_mode> and assigns the opened file a file reference number of <file_number>.
<file_number> must be 0 or between 3 and 15. Opening file 0 rewinds the standard
input. Examples of modes are "r" for reading, "w" for writing, and "a" for
appending. A file is always opened in text (non-binary) mode.

close_file(<file_number>)
This command closes the file associated with file reference number <file_number>.
<file_number> must be 0 or between 3 and 15.

read_file(<file_number>,<result_attr>)
This command reads a line from the file associated with file reference number
<file_number> and put the line in the attribute specified by <result_attr>.
<file_number> must be between 0 (for standard input) or between 3 and 15.

write_file(<file_number>,<string>)
This command writes <string> to the file associated with file reference number
<file_number>. <file_number> must be between 1 and 15. Numbers 1 and 2 are for
standard output and standard error files.

flush_file(<file_number>)
This command flushes the file associated with file reference number <file_number>.
<file_number> must be between 1 and 15. Numbers 1 and 2 are for standard output
and standard error files.

append_file(<dest_file_name>,<src_file_name>)
This command appends the file specified by <src_file_name> to the file specified by
<dest_file_name>.

set_output_format(<format>,<color_output>)
This command sets the output format to <format>. If <color_output> is 0, black and
white output (printing) mode will be used; otherwise, color output (printing) mode
will be used. Please see the Tgif.WhereToPrint X default for a list of possible
formats.

set_export_clip_rect(<ltx>,<lty>,<rbx>,<rby>)
This command sets the export clipping rectangle to be a rectangular region with
left-top corner at (<ltx>,<lty>) and right-bottom corner at (<rbx>,<rby>). <ltx>
must be strictly less than <rbx> and <lty> must be strictly less than <rby>.

import_file(<file_name>,<format>,<ltx>,<lty>)
This command imports the file specified by <file_name> and places it at
(<ltx>,<lty>). The file is expected to be in the format specified by <format>,
which can be "XBM", "XPM", "GIF", "PNG", "JPEG", "PBM", "PGM", "PPM", and names
specified by the Tgif.ImportFilter# X defaults. If <format> is "TGIF", the file
should either be a tgif file.

set_xpm_output_version(<version_number>)
This command sets the XPM version number when outputting in the X11 pixmap format
to be <version_number>. <version_number> can take on values 1 or 3.

edit_ini_section(<attr_name>,<title>,<section>,<ini_path>)
This command brings up a dialogbox to edit the section specified by <section> in
the file specified by the full path <ini_path>. If the user press the OK button in
the dialogbox, the section is cleared and the content of the dialogbox is written
back into the file, and "OK" is placed in the attribute specified by <attr_name>.
If the user press the CANCEL button in the dialogbox, the file is unmodified, and
"CANCEL" is placed in the attribute specified by <attr_name>.

select_from_ini_section(<attr_name>,<title>,<section>,<ini_path>)
This command brings up a list to select an entry from the section specified by
<section> in the file specified by the full path <ini_path>. If nothing is
selected, the attribute specified by <attr_name> will be cleared. Otherwise, the
selected entry will be written into the attribute specified by <attr_name>.

append_line_into_attr(<attr_name>,<string>)
This command appends the line specified by <string> to the attribute specified by
<attr_name>.

insert_line_into_attr(<attr_name>,<string>,<line_number>)
This command inserts the line specified by <string> as the nth line of the
attribute specified by <attr_name>, where n is a zero-based index specified by
<line_number>. n must be at least 1. If n is larger than the number of lines in
the attribute, blank lines are automatically inserted.

clear_attr(<attr_name>)
This command clears the attribute value of the attribute specified by <attr_name>
and deletes all other lines of the attribute if the attribute contains multiple
lines.

create_text_obj(<abs_x>,<abs_baseline_y>,<string>)
This command creates a text object at the location (<abs_x>,<abs_baseline_y>) with
the text specified by <string>.

create_box_obj(<abs_ltx>,<abs_lty>,<abs_rbx>,<abs_rby>)
This command creates a rectangle defined by (<abs_ltx>,<abs_lty>) and
(<abs_rbx>,<abs_rby>).

create_corner_oval_obj(<abs_ltx>,<abs_lty>,<abs_rbx>,<abs_rby>)
This command creates a corner oval defined by (<abs_ltx>,<abs_lty>) and
(<abs_rbx>,<abs_rby>).

create_center_oval_obj(<abs_x>,<abs_y>,<radius>)
This command creates a center oval centered at (<abs_x>,<abs_y>) with radius
specified by <radius>.

create_edge_oval_obj(<abs_ltx>,<abs_lty>,<abs_rbx>,<abs_rby>)
This command creates an edge circle defined by (<abs_ltx>,<abs_lty>) and
(<abs_rbx>,<abs_rby>).

create_rcbox_obj(<abs_ltx>,<abs_lty>,<abs_rbx>,<abs_rby>)
This command creates a rounded-corner rectangle defined by (<abs_ltx>,<abs_lty>)
and (<abs_rbx>,<abs_rby>).

create_arc_obj(<abs_x>,<abs_y>,<radius>,<dir>,<angle1>,<angle2>)
This command creates an arc centered at (<abs_x>,<abs_y>) with radius, direction,
start angle, and end angle specified by <radius>, <dir>, <angle1>, and <angle2>,
respectively. The <radius>, <dir>, <angle1>, and <angle2> are specified in the
same way as they are specified in the SpecifyAnArc() command under the CreateObject
submenu of the Edit Menu. <dir> can be "+" or "-" where "+" is clockwise.
<angle1> and <angle2> are in degrees with 0 degree at the 12 o'clock position.

create_first_vertex(<abs_x>,<abs_y>)
This command is used in conjunction with the create_next_vertex() and
create_poly_obj() commands to create a polyline/open-spline object. It can also be
used in conjunction with the create_next_vertex() and create_polygon_obj() commands
to create a polygon/closed-spline object. This command sets the starting point of
the polyline/open-spline object or the polygon/closed-spline object to be at
(<abs_x>,<abs_y>).

create_next_vertex(<abs_x>,<abs_y>)
This command is used in conjunction with the create_first_vertex() and
create_poly_obj() commands to create a polyline/open-spline object. It can also be
used in conjunction with the create_first_vertex() and create_polygon_obj()
commands to create a polygon/closed-spline object. This command sets the next
vertex of the polyline/open-spline object or the polygon/closed-spline object to be
at (<abs_x>,<abs_y>).

create_poly_obj()
This command is used in conjunction with the create_first_vertex() and
create_next_vertex() commands to create a polyline/open-spline object.

create_polygon_obj()
This command is used in conjunction with the create_first_vertex() and
create_next_vertex() commands to create a polygon/closed-spline object.

start_create_group_obj()
This command is used in conjunction with the create_group_obj() command to create a
grouped object. This command marks the beginning of the group.

create_group_obj()
This command is used in conjunction with the start_create_group_obj() command to
create a grouped object. This command groups all objects created since the last
start_create_group_obj() call into a grouped object.

set_allow_interrupt(<true_or_false>)
If <true_or_false> is FALSE (case-sensitive), this command is used to temporarily
disable an user interrupt when tgif is executing internal commands. If a user
interrupt is received when interrupt is disabled, it will be queued and will
interrupt the execution of internal commands when set_allow_interrupt() is called
again with <true_or_false> being TRUE (case-sensitive).

select_each_obj_and_exec(<attr_name_to_exec>)
This command first unselects any object that is selected. It then selects each
object in the current drawing in turn and executes the internal command specified
by the <attr_name_to_exec> attribute. If this command is executed as a result of a
mouse click over an object, only objects in the current page will be scanned for
execution. If this command is executed from a script file, objects in every page
will be scanned for execution.

edit_attr_in_text_mode(<attr_name>)
When this command is executed, tgif enters the text drawing mode and edits the
attribute specified by <attr_name>.

set_file_unsavable()
This command is used to make the current file unsavable.

pstoepsi(<target_eps_path>,<src_ps_path>,<scale>)
This command generates a preview bitmap for the PostScript file in <src_ps_path>
and prepends it to <src_ps_path> and save the output in <target_eps_path>
(<src_ps_path> is unmodified). The only accepted values of <scale> is 1 or 2. If
the Tgif.ExternalPsToEpsi X default is set to true, this command will simply invoke
"pstoepsi <src_ps_path> <target_eps_path>" externally if <scale> is 1 and will
invoke "pstoepsi -2x <src_ps_path> <target_eps_path>" if <scale> is 2. This
command only works if tgif is running in the interactive (non-batch) mode.

objs_bbox_intersect(<obj1_name>,<obj2_name>,<result_attr>)
This command sets the value of the attribute specified by <result_attr> to "1" if
the boundingboxes of objects named <obj1_name> and <obj2_name> intersect. It sets
the value of the attribute specified by <result_attr> to "0" otherwise.

delete_all_attr_from_selected_objs()
This command deletes all attributes from selected objects. Please only use this
command when commands are taken from an external file!

random_permute_lines_in_attr(<attr_name>)
This command randomly permutes lines of an attribute specified by <attr_name>.

ARITHMETIC EXPRESSIONS

Certain internal commands allow arithmetic expressions as arguments. Infix notation is
used. Supported operators (and their precedences) are listed below.

? 1 if-then-else, e.g. <rel> ? <iftrue> : <else>
: 2 if-then-else, e.g. <rel> ? <iftrue> : <else>
|| 3 logical OR
&& 4 logical AND
| 5 bit-wise OR
^ 5 bit-wise XOR
& 5 bit-wise AND
== 6 equal
!= 6 not-equal
> 7 greater than
< 7 less than
>= 7 greater than or equal to
<= 7 less than or equal to
<< 8 shift left
>> 8 shift right
+ 9 add
- 9 subtract
* 10 multiple
/ 10 divide
// 10 integer divide
% 10 mod
! 11 logical NOT
~ 11 bit-wise invert/NOT
) 12 closed parenthesis
( 13 open parenthesis

GENERATING IMAGEMAP FILES

This section describes how to generate NCSA imagemap and CERN clickable image files. The
Tgif.ImageMapFileFormat X default decides whether to generate a NCSA imagemap or a CERN
clickable image file. Since the two formats are very similar, we will only discuss how to
generate NCSA imagemap files. For more information about NCSA imagemap, please see [3].
For more information about CERN clickable image, please see [4].

The Tgif.GenerateImageMap X default should be set to ``true'' to enable the imagemap
generation. When printing in the GIF format (see the BASIC FUNCTIONALITIES section about
printing), an XPM file (which will be removed at the end of this process) is generated
first. (The value specified by the Tgif.InitExportPixelTrim X default is used to trim
extra pixels. Using these values forms an escape mechanism to fix an idiosyncrasy that
tgif can not figure out exactly how big the whole image is.)

The XPM version is specified by the Tgif.XPmOutputVersion X default unless the
Tgif.UseXPmVersion1ForImageMap X default is set to ``true'', which forces the XPM1 format.
Then the command specified by the Tgif.XpmToGif X default is executed to convert the XPM
file into a GIF (Generic Interchange Format) file which can be used by software such as
NCSA's Mosaic(1). The file extension for the GIF file is specified by the
Tgif.GifFileExtension X default. Together with the GIF file, an imagemap file with file
extension specified by the Tgif.ImageMapFileExtension X default is generated. The content
of the imagemap is generated as follows.

Tgif first looks for a file attribute with attribute name href. The value of the
attribute is written as the default URL. If such a file attribute can not be found,
imagemap generation is aborted. If it is found, then all objects in the file are scanned.
For an object having an attribute named href, the value of the attribute is written as the
URL for a method line in the imagemap. If the object is neither a circle nor a
poly/polygon, the rectangle method is used.

Similar mechanism is used when printing in the HTML format, except that a generic HTML
file is generated with an imagemap in the Spy Glass Client-side Imagemap format. You can
generate a custom HTML file if you specify an HTML export template using
SetHTMLExportTemplate() from the File Menu. Details about the template file is described
below.

HTML EXPORT TEMPLATE

If an HTML export template file is specified with the SetHTMLExportTemplate() from the
File Menu, custom HTML files can be generated when printing in the HTML format. The
customization is done through the use of variables embedded in the HTML export template
file. These variables have the syntax of an HTML character entity. They all starts with
"&tgv" and ends with ";". They are:

&tgvfilename;
This variable will be replaced by the name of the file (without file extension).

&tgvcurnum;
This variable will be replaced by current page number.

&tgvfirstnum;
This variable will be replaced by the first page number (usually 1).

&tgvlastnum;
This variable will be replaced by last page number.

&tgvprevnum;
This variable will be replaced by the previous page number (with wrap around).

&tgvprevnumnowrap;
This variable will be replaced by the previous page number (with no wrap around).

&tgvnextnum;
This variable will be replaced by the next page number (with wrap around).

&tgvnextnumnowrap;
This variable will be replaced by the next page number (with no wrap around).

&tgvtitle;
This variable will be replaced by the title the page or of the file.

&tgvmapobjs;
This variable will be replaced by the objects (specified as <AREA> tabs) in a
client-side image map.

For example, if a template specifies:

<IMG SRC="&tgvfilename;-&tgvcurnum;.gif"
USEMAP="#p0">
<MAP NAME="p0">
&tgvmapobjs;
<AREA SHAPE="RECT"
COORDS="0,0,&tgvmapwidth;,&tgvmapheight;"
HREF="&tgvfilename;-&tgvnextnum;.html">
</MAP>

Exporting using PrintOneFilePerPage() with this template may get (for page 2 of a file
name "foo.obj" with 5 pages):

<IMG SRC="foo-2.gif"
USEMAP="#p0">
<MAP NAME="p0">
<AREA SHAPE="RECT" ...>
...
<AREA SHAPE="RECT" ...>
<AREA SHAPE="RECT"
COORDS="0,0,145,97"
HREF="foo-3.html">
</MAP>

GENERATING MICROSOFT WINDOWS EPSI FILES

Some Microsoft Windows (TM) applications do not understand standard PostScript
%%BeginPreview, %%EndImage, and %%EndPreview comments. This section describes how to
generate an EPSI file which is understood by them. This feature is invoked when the
current print format is TiffEPSI. In this case, the generated EPSI file will contain 30
bytes of binary information in the beginning of the file and a TIFF image (also binary) at
the end of the file. This file also will not contain the %%BeginPreview, %%EndImage, and
%%EndPreview comments. A file in this format is normally not considered to be a
PostScript file except under Windows.

When this feature is enabled, tgif generates a normal EPSI file first, then dump the
current content of the file into an X11 bitmap file. The command specified in
Tgif.XbmToTiff is executed to generate a TIFF image which is then append at the end of the
EPSI file.

LOCKING OBJECTS

Objects can be locked and unlocked using #< and #> keyboard commands. When a selected
object is locked, it is shown with gray handles. A locked object cannot be moved,
stretched, flipped, or rotated; however, its properties, such as fill pattern, width,
etc., can be changed. Locked objects can also be deleted. When a locked object is
grouped with other objects, the resulting grouped object is also locked. A locked object
can be used as an anchor to align other objects; however, DistributeObjs() command will
fail if any objects are locked. Locked objects do not participate in any operations in
the select vertex mode.

UNDO/REDO

Most operations can be undone and redone. The Tgif.HistoryDepth X default controls the
size of the undo buffer. If it is set to -1, then the undo buffer's size is infinite.
The undo buffer is flushed when the New() or Open() commands are executed (from the File
Menu), when the FlushUndoBuffer() command is executed from the Edit Menu, or when Pop() is
executed from a .sym file. If a private colormap is used (automatically done when new
colors can not be allocated from the default colormap), executing FlushUndoBuffer() will
attempt to reset the colormap (if the -DDONT_FREE_COLORMAP compile option is not used).

DOMAINS

A domain is a collection of library symbols suitable for instantiations. A library is
implemented as a directory of .sym files, and therefore, a domain is implemented as a
search path. If there are symbols with the same file name which reside in different
directories specified in the search path, then the one closer to the front of the search
path will be made available for the user to instantiate.

The number of domains is specified by the MaxDomains X default, and the names of the
domains are specified by the DomainPath# X default. The library search paths are
specified by csh environment variables. See the section on X DEFAULTS for more details.

Domain information can also be loaded into the ~/.Tgif/domain.ini file by setting
Tgif.DomainInIni to true and selecting Reload Domain Info From X from the Domain submenu
of the File Menu.

SELECTING A NAME FROM A POPUP WINDOW

When selecting a file name, a symbol name, or a domain name, tgif pops up a window with
appropriate names for the user to choose from. The user can use mouse clicks to select an
entry. Key strokes can also be used to specify the desired name; however, tgif attempts
to match the key strokes with names in the selection on the fly. If a match can not be
found, the key strokes are ignored. ^n, ^j, or the DownArrow key advances the selection
down by 1 entry; ^p, ^k, or the UpArrow key advances the selection up by 1 entry. ^f, ^d,
or the DownArrow key with <Control> key held down advances the selection down by 10
entries; ^b, ^u, or the UpArrow key with <Control> key held down advances the selection up
by 10 entries. '$' will select the last entry, while '^' will select the first entry. ^w
or ^y un-select the selected entry. If the selected entry is a directory, hitting <CR>
will change directory; if not, hitting <CR> finishes the selection process and the
selected entry is returned.

In selecting file names to open or import, typing '/' is interpreted as going to the root
directory or specifying an URL. At this point, the automatic matching of key strokes is
temporarily disabled until either a <TAB> or a <CR> is pressed. Also, clicking the middle
mouse button in the file name area pastes from the clipboard.

The automatic appending of index.obj or .obj (introduced in version 2.16) became obsolete
and an URL is never modified.

The current selection is displayed near the top of the popup window. Back-space should be
used with caution because it might change the current directory to the parent directory.

IMPORTING EPS FILES

Encapsulated PostScript (EPS) files can be imported using the #( keyboard command. If the
EPS file has a preview bitmap (can be generated using the pstoepsi tool), tgif will
display it (HideBit/Pixmap() from the Layout Menu can be used to disable the displaying of
bitmap/pixmaps). When the EPS object is saved in a .obj or .sym file, neither the preview
bitmap, nor the PostScript content of the EPS file is saved. Therefore, when printing
such a file (either from tgif or using prtgif), the EPS file must be present at the same
place from which it was originally imported.

IMPORTING LATEX

Short Version
You can import a LaTeX equation into a tgif object. When you select Instantiate from the
Special Menu (or press <Cntrl>i), you should see eq4.sym. Double-click it and tgif will
ask you to click on the drawing area to place it. After you have placed it, you have
instantiated an eq4 symbol and the instantiation is called an eq4 object (or the LaTeX
equation object). Now you can go into edit text mode (e.g. press <Cntrl>w) and click
anywhere inside the eq= attribute (i.e. the text of the equation) to edit the equation.
Return to select mode (e.g. press <meta>k) and double click on the eq= attribute to run
latex on it and import the resulting EPSI file.

If you have a large equation, you can right-click on the equation object, select Edit
Attribute in Editor, and select eq= and edit the equation in an editor of your choice.
You can use the Tgif.Editor X default to select your editor, for example:
Tgif.Editor: xemacs -title '%s' '%s'

To declutter your screen, you may select the eq4 object and use the shortcut key T to hide
the eq= attribute. Type T again to make it visible.

Once you import the EPSI file, you may use the left mouse button to drag either the eq=
attribute or the imported graphic, and the other will follow. If you hold the control key
down, you can drag the eq= attribute separately.

Details
Since version 4.1.16, the standard distribution of tgif comes with four LaTeX equation
symbol files:
eq4.sym
eq4-2x.sym
eq4-ps2epsi.sym
eq4-epstool.sym

The Debian package installs these files in /usr/share/tgif/latex, and initializes tgif
with one domain (number 0) called LaTeX. When tgif starts, the default domain should be
domain number 0, and tgif should look for *.sym files first in the current directory, then
in ~/.tgif/latex, then in /usr/share/tgif/latex.

In order to use eq4.sym, in addition to latex and dvips, you need:

pstoepsi to convert a PS (PostScript) file generated by
dvips to an EPSI (encapsulated PostScript file with a preview bitmap) file

netpbm used by pstoepsi to convert a PBM file to a preview bitmap for the final EPSI file

ghostscript
used by pstoepsi to render a PS file into a PBM file

Once you have these tools properly installed, you can simply instantiate eq4.sym and
change the value of the eq= attribute.

Just double-click the equation object and tgif will run the following commands:
latex tmpfile
dvips -N -n 1 -o tmpfile.ps tmpfile
pstoepsi tmpfile.ps tmpfile.eps
where tmpfile is a temporary file generated by tgif (usually in /tmp) and the file name
starts with Tgif.

This should work if everything is installed properly. In case it does not work, you will
get an error messagebox. Do not close the box. Change directory into /tmp and look for
the latest file that starts with Tgif and ends in .tex and copy it. Then run the above
commands manually to debug the problem. For example, you can do:
cd /tmp
ls -lrt Tgif*

-rw-r--r-- 1 william 230 Mar 22 11:27 TgifmTaOdC.tex
-rw-r--r-- 1 william 4636 Mar 22 11:27 TgifmTaOdC.log
-rw-r--r-- 1 william 324 Mar 22 11:27 TgifmTaOdC.dvi
-rw-r--r-- 1 william 8 Mar 22 11:27 TgifmTaOdC.aux
-rw-r--r-- 1 william 18561 Mar 22 11:27 TgifmTaOdC.ps
-rw-r--r-- 1 william 18561 Mar 22 11:27 TgifmTaOdC.eps
(Please note that in the above listing, TgifmTaOdC.ps and TgifmTaOdC.eps have the same
file size, this means that pstoepsi did not work.)
cp TgifmTaOdC.tex foo.tex
latex foo
dvips -N -n 1 -o foo.ps foo
pstoepsi foo.ps foo.eps
more foo.eps
At this point, you should see that the first few lines of foo.eps look like:
%!PS-Adobe-2.0 EPSF-1.2
%%BoundingBox: 258 634 354 653
%%BeginPreview: 97 20 1 20
% 00000000000000000000000e00
% ...
% 00000000000000000003c00000
%%EndImage
%%EndPreview
...
These lines are added by pstoepsi. The numbers in the %%BoundingBox: and %%BeginPreview:
depends on your equation and the PS-Adobe and EPSF versions in the first line may vary
depending on your setup.

If you get errors when you run latex, dvips, or pstoepsi manually, there is something
wrong with the setup of these tools. If they all do the right thing but tgif still shows
errors, please send e-mail to me!

eq4-2x.sym can produce a higher (2x) resolution preview bitmap, but you will need the
special netpbm-20may1999 version of netpbm. It may not work with a newer version of
netpbm. eq4-ps2epsi.sym is not recommended. eq4-epstool.sym is like eq4.sym but uses
epstool instead.

ADDITIONAL FONTS

In addition to the Times, Courier, Helvetica, NewCentury, and Symbol fonts, additional
fonts can be specified using the Tgif.AdditionalFonts X default. (The default screen
fonts can also be replaced, please see Tgif.HasAlternateDefaultFonts in the X DEFAULTS
section for more details.) Each additional font requires 4 parts, one for each font style
(in the order of Roman, Bold, Italic, and BoldItalic). Each part contains 3 strings. The
first string specifies the family, weight, slant, and width of the font (please see the
man pages for xfontsel(1) for more details; also there is a second form which is described
below). The second string specifies the registry and encoding of the font (see
xfontsel(1) again). (One can use xlsfonts(1) to see what fonts are available and pick out
the just mentioned two strings from the output.) The third string specifies the
PostScript font name.

For example, if one wants to use the X Lucida font to represent the PostScript
ZapfChancery-MediumItalic font, one can set Tgif.AdditionalFonts as follows:

Tgif.AdditionalFonts: \n\
lucida-medium-r-normal \n\
iso8859-1 \n\
ZapfChancery-MediumItalic \n\
\n\
lucida-demibold-r-normal \n\
iso8859-1 \n\
ZapfChancery-MediumItalic \n\
\n\
lucida-medium-i-normal \n\
iso8859-1 \n\
ZapfChancery-MediumItalic \n\
\n\
lucida-demibold-i-normal \n\
iso8859-1 \n\
ZapfChancery-MediumItalic

The above maps all four font styles of the Lucida font to the ZapfChancery-MediumItalic
font (similar to how Symbol font is handled).

The first string can also be specified in a second form which is identified by having "%d"
as part of the string. For example, one can use "lucidasans-%d" as the first string. In
this case, the actual X font used will be the specified string with "%d" replaced by the
font size. The encoding string (second string) is ignored (but must be present). The
font name prefix (please see Tgif.FontNamePrefix entry in the X DEFAULTS section) is also
ignored.

POSTSCRIPT CHARACTER ENCODING FOR INTERNATINOAL CHARACTERS

Sometimes, different encodings of the same PostScript font is needed for characters with
character codes between 161 and 255 (inclusive). This can be accomplished in two ways.
One way is to use Tgif.AdditionalDontReencode (and Tgif.DontReencode). Another way is to
use Tgif.PSFontNeedCharSubs. The difference is that with Tgif.AdditionalDontReencode, a
PostScript font's encoding is skipped. With Tgif.PSFontNeedCharSubs, characters in a
PostScript font can be given specific encoding.

In both cases, there is a need to introduce fake font names (place holders). For example,

Tgif.AdditionalFonts: \n\
utopia-medium-r-normal \n\
adobe-fontspecific \n\
UtopiaTmp-Regular \n\
\n\
utopia-bold-r-normal \n\
adobe-fontspecific \n\
UtopiaTmp-Bold \n\
\n\
utopia-medium-i-normal \n\
adobe-fontspecific \n\
UtopiaTmp-Italic \n\
\n\
utopia-bold-i-normal \n\
adobe-fontspecific \n\
UtopiaTmp-BoldItalic
Tgif.PSFontAliases: \n\
UtopiaTmp-Regular=Utopia-Regular \n\
UtopiaTmp-Bold=Utopia-Bold \n\
UtopiaTmp-Italic=Utopia-Italic \n\
UtopiaTmp-BoldItalic=Utopia-BoldItalic

In the above example, 4 fake PostScript font names are created (all have a common
"UtopiaTmp" prefix). The encoding for these fonts is adobe-fontspecific, according the
X11 fonts being used. Tgif.PSFontAliases maps the fake PostScript font names to the
corresponding real PostScript font names. (If Tgif.PSFontAliases is missing, non-existent
PostScript font names such as UtopiaTmp-Regular will appear in a PostScript file.)

To skip a PostScript font's encoding, one can use the Tgif.AdditionalDontReencode X
default. For example, if one specifies:

Tgif.AdditionalDontReencode: UtopiaTmp

characters with character codes between 161 and 255 (inclusive) will not be encoded with
ISO-Latin-1 character names. For a list of characters names that are ISO-Latin-1 encoded,
please see
<URL:http://bourbon.usc.edu/tgif/faq/charencode.html#iso8859-1>.

To substitute characters in a PostScript font with specific encoding, one can use the
Tgif.PSFontNeedCharSubs and Tgif.PSCharSubs_* X defaults. (You still need
Tgif.AdditionalFonts and Tgif.PSFontAliases setup as above.) Here is an example:

Tgif.PSFontNeedCharSubs: \n\
Utopia-Regular=Foo \n\
Utopia-Bold=Foo \n\
Utopia-Italic=Foo \n\
Utopia-BoldItalic=Foo
Tgif.PSCharSubs_Foo: \n\
exclamdown/Aogonek \n\
AE/Cacute \n\
ecircumflex/eogonek

In the above example, Tgif.PSFontNeedCharSubs specified a list of fake PostScript font
names that requires character substitutions and their corresponding TOKEN names. For a
fake PostScript font name that maps to TOKEN, the list of characters to be substituted is
specified in the Tgif.PSCharSubs_TOKEN X default. The format for Tgif.PSCharSubs_TOKEN is
a list of OLDCHARCODE/NEWCHARNAME strings where OLDCHARCODE is a character code in decimal
or octal format and NEWCHARNAME must be the name of a PostScript character. In the above
example, Foo was used as the TOKEN name. In real use, something like iso8895-2 may be
more appropriate for a TOKEN name. Since decimal or octal codes are allowed, the
following is equivalent to the above:

Tgif.PSFontNeedCharSubs: \n\
Utopia-Regular=iso8859-2 \n\
Utopia-Bold=iso8859-2 \n\
Utopia-Italic=iso8859-2 \n\
Utopia-BoldItalic=iso8859-2
Tgif.PSCharSubs_iso8859-2: \n\
161/Aogonek \n\
8#306/Cacute \n\
8#312/eogonek

Please note that substitution only occurs for characters with character codes between 161
and 255 (inclusive).

For more information, please see
<URL:http://bourbon.usc.edu/tgif/faq/charencode.html#charsubs>.

SQUARE DOUBLE BYTE FONTS

Starting with version 4.0 of tgif, double-byte fonts are supported. But only double-fonts
where every character has the same width and height are supported. Double-byte fonts is
specified using the Tgif.SquareDoubleByteFonts X default. The format of this X default is
similar to that of the Tgif.AdditionalFonts X default described in the ADDITIONAL FONTS
section above with differences described here. Each double-byte font requires 4 parts,
one for each font style (in the order of Roman, Bold, Italic, and BoldItalic). Each part
contains 3 strings. The first string specifies the name of the font. It must contain a
"%d" as part of the string. The actual X font used will be the specified string with "%d"
replaced by the font size. The second string can be either "*", "H", or "V". When it is
the "V" string, each character is rotated 90 degrees counter-clockwise. Otherwise, the
characters are not rotated. The third string specifies the PostScript font name.

Using input methods (specified by the Tgif.DoubleByteInputMethod X default) one can mix
english (single-byte) substrings within a double-byte string. The font to use for the
english substring is specified by the Tgif.DefaultSingleByteFont X default.

For example, if one wants to use the X Song Ti font to represent PostScript GB-Song-
Regular font, one can set Tgif.SquareDoubleByteFonts as follows:

Tgif.DefaultSingleByteFont: Helvetica
Tgif.GBShowFontChar: 271372 Tgif.GBConvFromUTF8: iconv -f utf8 -t gb2312
Tgif.GBUConvToUTF8: iconv -f gb2312 -t utf8
Tgif.SquareDoubleByteFonts: \n\
-isas-song ti-*-*-*--%d-*-*-*-*-*-gb2312.1980-0 \n\
* \n\
GB-Song-Regular \n\
\n\
-isas-song ti-*-*-*--%d-*-*-*-*-*-gb2312.1980-0 \n\
* \n\
GB-Song-Regular \n\
\n\
-isas-song ti-*-*-*--%d-*-*-*-*-*-gb2312.1980-0 \n\
* \n\
GB-Song-Regular \n\
\n\
-isas-song ti-*-*-*--%d-*-*-*-*-*-gb2312.1980-0 \n\
* \n\
GB-Song-Regular

In the above example, the Song Ti font doesn't have styles such as italic and bold, so all
four parts are identical. The Tgif.GBShowFontChar X default specifies a double-byte octal
character to be used to represent this font in the Choice Window when this font is
selected. The Tgif.GBUConvFromUTF8 X default specifies a command to run when an
UTF8-encoded string is to be pasted into a text object in the GB font. The
Tgif.GBUConvToUTF8 X default specifies a command to run in a copy operation to convert a
selected string (in GB font) to the UTF8 format then copied to the clipboard.

Below is another example of using the X JIS fonts to represent PostScript Ryumin-Light-
EUC-H and Ryumin-Light-EUC-V fonts as follows:

Tgif.RyuminShowFontChar: 244242
Tgif.SquareDoubleByteFonts: \n\
-jis-fixed-*-*-*--%d-*-*-*-*-*-jisx0208.1983-* \n\
H \n\
Ryumin-Light-EUC-H \n\
-jis-fixed-*-*-*--%d-*-*-*-*-*-jisx0208.1983-* \n\
H \n\
Ryumin-Light-EUC-H \n\
-jis-fixed-*-*-*--%d-*-*-*-*-*-jisx0208.1983-* \n\
H \n\
Ryumin-Light-EUC-H \n\
-jis-fixed-*-*-*--%d-*-*-*-*-*-jisx0208.1983-* \n\
H \n\
Ryumin-Light-EUC-H \n\
\n\
-jis-fixed-*-*-*--%d-*-*-*-*-*-jisx0208.1983-* \n\
V \n\
Ryumin-Light-EUC-V \n\
-jis-fixed-*-*-*--%d-*-*-*-*-*-jisx0208.1983-* \n\
V \n\
Ryumin-Light-EUC-V \n\
-jis-fixed-*-*-*--%d-*-*-*-*-*-jisx0208.1983-* \n\
V \n\
Ryumin-Light-EUC-V \n\
-jis-fixed-*-*-*--%d-*-*-*-*-*-jisx0208.1983-* \n\
V \n\
Ryumin-Light-EUC-V

MULTIPAGE DRAWING

An object file can contain multiple pages. Two layout modes, stacked and tiled, for a
multipage drawing are supported. In stacked layout mode, pages are considered to be
stacked on top of each other, and therefore, an object can only appear on one page. In
tiled layout mode, pages are tiled to form a large logical page; in this case, an object
can exist on several physical pages simultaneously. Swiching between the two modes are
considered rare events and can not be undone. Tgif does not allow switching from the
tiled layout mode to the stacked mode when there exists an object that spans physical page
boundaries because it can not decide which physical page the object belongs.

Page numbers are supported through the use of page numbering objects. A page number
objecting is an object that contains an attribute whose name is !PAGE_NUM (the name is
case-sensitive) and the name part of that attribute is not shown (hiding an attribute name
can be achieved by using the Move/JustifyAttr() command under the Attribute submenu of the
Special Menu). The value of the attribute determines how the page number is printed. If
the value of the attribute contains a !(STACKED_PAGE_NUM) substring, that part of the
substring will be replaced by the page number if the page layout mode is stacked. If the
page layout mode is tiled, the string will be printed out as is. If the value of the
attribute contains a !(STACKED_NUM_PAGES) substring, that part of the substring will be
replaced by the number of pages if the page layout mode is stacked. If the value of the
attribute contains a !(TILED_PAGE_ROW) or !(TILED_PAGE_COL) substring, that part of the
substring will be replaced by the row number or the column number of the physical page if
the page layout mode is tiled.

SPECIAL ATTRIBUTES

There are a few special attributes that tgif recognized. There are described in this
section. They are all case-sensitive.

!PAGE_NUM=<page_number>
This specifies the page numbers in a multipage drawing. Please see the MULTIPAGE
DRAWING section for details.

auto_center_attr
If an attribute's name is empty and the value is auto_center_attr, then all the
visible attributes of the owner object will automatically be centered relative to
the bounding box of the owner object. It doesn't really make sense to have
multiple visible attributes because they will overlap. This attribute is useful
for making simple flowchart elements.

unmakeiconic_on_instantiate
If a symbol object's attribute has an empty attribute name and the value is
unmakeiconic_on_instantiate, then when the symbol is instantiated, the following
commands are performed on the just-instantiated icon object: 1) UnMakeIconic()
command from the Special Menu, 2) UnGroup() command from the Arrange Menu, and 3)
the "unmakeiconic_on_instantiate" text object is removed. This attribute is useful
for making simple flowchart segments.

unmakeiconic_on_instantiate_delete_attrs
If a symbol object's attribute has an empty attribute name and the value is
unmakeiconic_on_instantiate_delete_attrs, then when the symbol is instantiated, the
following commands are performed on the just-instantiated icon object: 1)
UnMakeIconic() command from the Special Menu, 2) delete all attributes from this
object, and 3) UnGroup() command from the Arrange Menu. This attribute is useful
for putting a group of "useful" objects into a symbol object.

retracted_arrows
If an attribute's name is empty and the value is retracted_arrows for a polyline or
open-spline object with more than 2 vertices, then the arrows of the spline object
is retracted by one vertex.

auto_retracted_arrows
This is very similar to the retracted_arrows above except that the object must be
an interpolated open-spline with only one arrow head. The spline object is forced
to have 3 vertices and the middle vertex of the spline object is automatically
adjusted when an endpoint is moved.

auto_exec=<internal_command>
If such a file attribute exists, the value is executed when the file is opened
(unless the file is opened as a result of executing the hyperjump_then_exec()
internal command).

edit_attrs_in_context_menu=...
If an object has an attribute named edit_attrs_in_context_menu, the values
(starting from the 2nd line and separated by linebreaks) of this attribute are
treated as attribute names. The named attributes will be visible in the Edit
Attribute In Editor submenu of the Context Menu. For example, if an object has the
following attributes:

edit_attrs_in_context_menu=
x
y
z
w=greetings
x=hello
y=world
z=how are you
good-bye

the Edit Attribute In Editor submenu of the Context Menu will only show "x=hello",
"y=world", and "z=how are you".

EXPORT TO TABLE

When the ExportToTable() command is selected from the Table submenu of the Special Menu,
certain attributes of selected objects are written into a user-specified output file in a
format which can be easily imported by a spreadsheet program or to be used by the
MergeWithTable() command described in the next section. An output file contains columns
of strings. Two columns are separated by a single <TAB> character. The first row of a
output file contains the column names and all other rows contain values.

The names of the attributes to be written are specified by the file attribute named
TABLE_ATTRS (which is denoted by !.TABLE_ATTRS here). The value of the TABLE_ATTRS file
attribute is a list of comma-separated attribute names. When ExportToTable() command is
executed, the attribute names specified by !.TABLE_ATTRS are written to the output file
first. Then, for each selected object, every one of its attribute which appears in the
list specified by !.TABLE_ATTRS are written to the output file in one line. If an object
has no attributes that match the specification, no corresponding line is generated.

MERGE WITH TABLE

When the MergeWithTable() command is selected from the Table submenu of the Special Menu,
a selected object is merged (also known as mail-merged on PCs) with a table (data) file
(in the same format as the output file described in the previous section) to generate a
new multipage drawing having the stacked page layout mode.

The selected object contains formating information, and it is also used as a template to
be replicated for each data row in the table file. If an attribute of the replica matches
the column name of the table, the attribute value is set to the value in the table file.
The replicas are tiled horizontally first.

Eight attributes must be specified in the template object. They are all case-sensitive.
The ones that measure distances can be specified in inches ("in"), centi-meters ("cm"), or
pixels (if no units are specified).

PAPER_WIDTH
This specifies the width of the paper.

PAPER_HEIGHT
This specifies the height of the paper.

LEFT_MARGIN
This specifies the distance to the left edge of the paper.

TOP_MARGIN
This specifies the distance to the top edge of the paper.

H_PITCH
This specifies the distance between the left edges of the replicas.

V_PITCH
This specifies the distance between the top edges of the replicas.

NUM_COLS
This specifies the number of replicas to tile horizontally before moving
down to the next row.

NUM_ROWS
This specifies the number of replicas to tile vertically before moving to
the next page.

After each replica is generated, filled with the data from the table file, and placed, its
attribute named exec is executed (unless an attribute named EXEC_AFTER_MERGE is specified,
in which case, the attribute named by the EXEC_AFTER_MERGE attribute is executed instead).
If there is no attribute named by the EXEC_AFTER_MERGE attribute, nothing is executed.
(Please see the INTERNAL COMMANDS section for details on command execution.) One can use
the exec command to construct other attributes from the attributes associated with the
data table.

If an attribute whose name is empty and whose value is the string USER_PLACEMENT, the user
will be asked to place the replica (object name will be displayed in the Status Window
when the object is being placed). In this case, the 8 placement related attributes are
ignored.

If an attribute whose name is empty and whose value is the string STRIP_DOUBLE_QUOTES,
data fields surrounded by double-quotes are stripped.

MIME TYPES AND MAILCAPS

When an URL names an HTTP server, the HTTP server sends the Content-type of the URL along
with the remote file referenced by the URL to tgif. The Content-type contains information
such as the type/subtype of the file plus some optional fields. If the file is not a tgif
file, the following mechanism is used to view the file.

First, the X defaults are looked up to see if there is an external viewer specified for
the file. Please see Tgif.@@@Viewer in the X DEFAULTS section below for details. If
there's no match, the type/subtype is matched against entries in the MIME-types file. The
default MIME-types file is .mime.types in user's home directory. Please see
Tgif.MimeTypesFile in the X DEFAULTS section on how to override the default MIME-types
file. The first field in each line of the MIME-types file specifies type/subtype
information. If there is a type/subtype match in the MIME-types files, the MailCap files
are consulted as follows.

A line in a MailCap file consists of fields separated by semi-colons. The first field
specifies the type/subtype and the second field specifies a view command for viewing a
file that matches the type/subtype. For tgif, the view command must contains a single %s
substring to be replaced by local copy of the URL. Only the %t and the %{} optional
fields are supported by tgif. The multipart MIME-type is not supported. The type/subtype
information of the remote file is matches against the MailCap files. If a match is found,
the corresponding view command is executed. If no match is found, but the type of the
remote file is either application, audio, image, or video, the file is saved and no
external viewer is launched. Otherwise, the remote file is assumed to be pure text and
tgif will create a text object to view the text.

The MailCap files are the (colon-separated) files specified by the MAILCAP environment
variable (if defined). If MAILCAP is not defined, the .mailcap file in the user's home
directory is used.

MIME is the Multipurpose Internet Mail Extensions specified in RFC1521, and MAILCAP is
specified in RFC1524.

HOW TO MAKE A BUILDING-BLOCK OBJECT (SYMBOL FILE)

Here are the steps for defining a building-block object, to be used in a hierarchical
design.

1) Draw the representation part of the building-block object. Group everything
together. Select this grouped object.

2) Popup the main menu with the middle mouse button; select ``Special''. Select
``MakeSymbolic'' from the next popup menu. The selected object becomes a symbol
and gets a dashed boundary.

3) Type in attributes as individual text strings. Select the symbol object and all
the text strings to be attached to the symbol. Type #a (for Attach) to attach
attributes to the symbol.

4) (This step is optional.) Build the definition part of the building-block object.
Look at the ``flip-flop.sym'' file for an example. To look at that file, first,
instantiate a ``flip-flop'' by typing ^i (for Instantiate). Select the flip-flop
from the popup window; place the flip-flop; select the flip-flop and type #v (for
Push) to see the symbol file.

5) Save and name the file. If the current library path contains the current directory
(or '.'), the symbol just built should be instantiatable by typing ^i.

X11 PIXMAP (XPM) FORMATS

Tgif can only import X11 pixmaps that satisfy the constraints described here. The format
of the X11 pixmap must be either 1 (XPM1) or 3 (XPM3). Only a subset of the XPM3 format
is supported, namely, the key field for the color specification must be 'c' (for color
visuals). Tools that generate XPM1 format files are (they might have been upgraded to
support XPM3), pbmplus (or netpbm), which is a set of bitmap and pixmap conversion
freeware (together with xv, the colors for pixmap objects can be manipulated), and
xgrabsc, another freeware; also, xloadimage can display XPM1 files. Tools that can
generate XPM3 format files are, for example, xsnap(1) and sxpm(1). For each color
specified in the color string, a color cell is allocated. If the allocation fails, the
current color will be used for that color string. If the first color character is a back-
quote (`) or a space, then the corresponding color is substituted with the background
color of the tgif window if the Tgif.GuessXPmBgColor X default is set to ``true''. (This
design choice is made because the pixmap will then look ``right'' on both regular and
reverse video.) The following is an example of a very small pixmap file (in XPM1 format).

#define arrow_format 1
#define arrow_width 5
#define arrow_height 3
#define arrow_ncolors 3
#define arrow_chars_per_pixel 1
static char *arrow_colors[] = {
"`", "Black",
"a", "red",
"b", "yellow"
};
static char *arrow_pixels[] = {
"`a```",
"aabbb",
"`a```"
};

LATEX FIGURE FORMATS

Here we show how to make a figure for a LaTeX file, first with the \psfig (or \epsf)
special construct, then with the psfile special construct. (The author does not recommend
the psfile construct.) An example of both can be found in ``example.tex'' which is
included with the tgif distribution.

To print a tgif file to be included in a LaTeX document with the \psfig or \epsf special
construct (files generated will be in the Encapsulated PostScript format), first select
LaTeX format in the panel window (click the left mouse button on the laser printer icon),
then type ^p to generate the Encapsulated PostScript file. If the file name is ``an-sr-
flip-flop.obj'', then the LaTeX figure file generated will be named ``an-sr-flip-
flop.eps''. This file can be included in a LaTeX document as follows,

\input{psfig}
\begin{figure*}[htb]
\centerline{\psfig{figure=an-sr-flip-flop.eps}}
\caption{An SR flip-flop. \label{fig:an-sr-flip-flop}}
\end{figure*}

An alternative way is to use the \epsf construct as follows,

\input{epsf}
\begin{figure*}[htb]
\centerline{\epsffile{an-sr-flip-flop.eps}}
\caption{An SR flip-flop. \label{fig:an-sr-flip-flop}}
\end{figure*}

The \centerline command above centers the picture. If one has multiple tgif figures in
one's LaTeX document, one only have to include the psfig macro (\input{psfig} or
\input{epsf}) once, right after the \begin{document} statement.

If Encapsulated PostScript is not available, the psfile special construct can be used as
described here. In this case, since LaTeX doesn't not know where the bounding box of the
drawing is, it takes some practice to get this just right. Here is something that seems
to work. First, center the picture on the page (e.g., the width of a portrait style page
is 8.5 inch, so the center of the page is at the 4.25 inch mark), and make the top object
in the picture about 1/4 inch away from the top of the page. Select the LaTeX format in
the panel window, then print in the LaTeX format. As with the psfig construct, a file
with the .eps extension will be generated. This file can be included in a LaTeX document
as follows,

\begin{figure*}[htb]
\special{psfile="an-sr-flip-flop.eps" hoffset=-40}
\rule{0in}{1.1in}
\caption{An SR flip-flop. \label{fig:an-sr-flip-flop}}
\end{figure*}

The \rule{0in}{1.1in} above specifies an invisible box of 1.1 inches high, which is the
total height of the picture in an-sr-flip-flop.

CONNECTING OBJECTS

In the world of E-CAD, an icon object can represent an electronic component and a line
object can represent a connection between a pair of pins of two electronic components.
When a component moves, the endpoint of a wire connecting to the component will also move
with the component. Tgif simulates these functionalities in a limited fashion.

In tgif, a connection is represented by matching signal names. A wire is defined as a
polyline object having a type=tgWire attribute and an attribute named signal_name. The
definition of a pin is more complicated. It is described in the next paragraph. If two
pins have identical values for the signal_name attribute, they are considered to be
connected (they do not have to be visually connected by a wire).

A pin object must have a type=port attribute and attributes named signal_name and name.
But not all objects having such attributes are pins. In addition, a pin object must be
either:

(1) a top-level symbol or an icon object

or:

(2) an immediate subobject of a owner symbol or icon object. or:

(3) an immediate subobject of a owner grouped object which has a type=tgBroadcastWire
attribute.

In (2) above, the owner object must also have an attribute named name and must not be a
subobject of another symbol or icon object. If the owner object is a subobject of a
grouped object, the name attributes of the grouped object will be ignored.

In (3) above, that grouped object can be created using the ConnectPortsToBroadcastWire()
command in the PortsAndSignals submenu of the Special Menu when a polyline object and some
floating port objects are selected.

A pin object can have a connected view and a disconnected view. A connected view is a
subobject with a view=conn,FILL,PEN attribute and a disconnected view is a subobject with
a view=disconn,FILL,PEN attribute; FILL and PEN are numeric values between 0 and 31
(inclusive). The value corresponds to patterns in the Fill Menu and the Pen Menu.
Normally, only 0 or 1 should be used. When the signal_name attribute of a pin object is
changed from an empty string to a non-empty string, the pen and fill of the subobject that
corresponds to the disconnected view will be set to 0 (meaning NONE) and the pen and fill
of the subobject that corresponds to the connected view will be set to the values
specified in the view attribute of the connected view. When the signal_name attribute of
a pin object is changed from a non-empty string to an empty string, the pen and fill of
the subobject that corresponds to the connected view will be set to 0 and the pen and fill
of the subobject that corresponds to the disconnected view will be set to the values
specified in the view attribute of the disconnected view.

A connection can be created using the ConnectTwoPortsByAWire() command from the
PortsAndSignals submenu of the Special Menu. Please note that if a pin is part of another
object, that object must also have a name attribute with a non-empty value. When two pins
are connected using this command, the signal_name attributes of the pins and the wire will
be set to have the same value.

The moving of endpoints when a component moves is implemented in tgif using the
constrained move mode from the MoveMode Menu (please see Tgif.ConstrainedMove in the X
DEFAULTS section for additional information). Please note that a connected wire that is
not visually connected will not automatically extends itself to follow a connected
component even in the constrained move mode. Also, when a wire object is deleted, the
signal_name attributes of connected pins do not change (since they are not really
"connected").

X DEFAULTS

Tgif.Geometry: WIDTHxHEIGHT+X+Y

Tgif.IconGeometry: +X+Y

Tgif.Foreground: COLORSTRING
The default foreground color is Black.

Tgif.Background: COLORSTRING
The default background color is White.

Tgif.BorderColor: COLORSTRING
If not specified, the foreground color will be used.

Tgif.ReverseVideo: [on,off]
For black and white terminal, reverse video ``on'' means the background is black.
For color terminal, reverse video ``on'' means the background is specified by the
Tgif.Foreground color. The default is off.

Tgif.InitialFont: [Times,Courier,Helvetica,NewCentury,Symbol]
This specifies the initial font. The default is Courier.

Tgif.InitialFontStyle: [Roman,Bold,Italic,BoldItalic]
This specifies the initial font style. The default is Roman.

Tgif.InitialFontJust: [Left,Center,Right]
This specifies the initial font justification. The default is Left.

Tgif.InitialFontDPI: [75,100]
Obsoleted.

Tgif.InitialFontSizeIndex: [0,1,2,3,4,5]
Obsoleted.

Tgif.InitialFontSize: NUMBER
This specifies the size of the start-up font. The default is 14. An alternative
form allows "pt" to be specified immediately after NUMBER (with no space between
"pt" and the NUMBER).

Tgif.MsgFontSizeIndex: [0,1,2,3,4,5]
Obsoleted.

Tgif.MsgFontSize: NUMBER
This specifies the size of the font used for messages, menues, and popup windows.
The default is 14.

Tgif.RulerFontSize: NUMBER
This specifies the size of the font used for ruler windows. The default is 10.

Tgif.DefaultFontSize: NUMBER
This specifies the size of the font to be used when a requested for a font size can
not satisfied. This size must exist for all fonts used in tgif. The default is
14.

Tgif.FontSizes: NUMBER1 NUMBER2, ...
This specified the font sizes. The default is 8 10 11 12 14 17 18 20 24 25 34. An
alternative form allows "pt" to be specified immediately after a NUMBER (with no
space between "pt" the the NUMBER). Please also use Tgif.InitialFontSize to
specify the initial font size to use if 14 is not in the specified font sizes.

Tgif.AdditionalFonts: FONT_SPEC1 FONT_SPEC2 ...
In addition to the Times, Courier, Helvetica, NewCentury, and Symbol fonts,
additional fonts can be specified here. Please see the ADDITIONAL FONTS section
for details.

Tgif.FontNamePrefix: [-*, *]
This specified the prefix to be used when tgif makes a request to the X server.
The default is -*. Certain fonts have obscure font names (e.g., does not start
with the - character). In order to use these fonts, this X default can be set to
*.

Tgif.DefaultLatin1FontCharEncoding: STRING
Tgif uses 4 default fonts, "times", "courier", "helvetica", and "new century
schoolbook". By default, the character encoding for these fonts is iso8859-1.
These fonts are usually scalable and pre-installed in older Linux systems. In
newer Linux system, this is no longer the case. Only a small number of font sizes
are pre-installed. The pre-installed scalable versions of these fonts are
iso10646-1 (Universal Character Set) encoded. This X default can be used to
specify a different character encoding (such as iso10646-1) for the 4 default
fonts. This X default does not apply to alternate default fonts or fonts specified
by the Tgif.AdditionalFonts X default. The default is iso8859-1.

Tgif.HasAlternateDefaultFonts: [true,false]
The default value of this X default is false. If it is set to ``false'', tgif uses
the iso8859 registry with ASN1 encoded screen fonts (unless it's overridden by the
Tgif.DefaultFontCharEncoding X default), and it looks for "times", "courier",
"helvetica", "new century schoolbook", and "symbol" as part of the screen font
names. Some X servers do not support these fonts. In this case, this X default
can be used to make tgif use user specified screen and PostScript fonts. If this X
default is set to ``true'', tgif will look for additional X defaults of the form
Tgif.<ps_font_name>, where <ps_font_name> can be one of the following strings:

Times-Roman
Times-Bold
Times-Italic
Times-BoldItalic
Courier
Courier-Bold
Courier-Oblique
Courier-BoldOblique
Helvetica
Helvetica-Bold
Helvetica-Oblique
Helvetica-BoldOblique
NewCenturySchlbk-Roman
NewCenturySchlbk-Bold
NewCenturySchlbk-Italic
NewCenturySchlbk-BoldItalic
Symbol

The corresponding value of the X default must contain "%d" as part of the string,
and the "%d" string will be replaced by the font size when the font is requested.
For example, The following lines will use the Times New Roman screen font instead
of the Times screen font and use the Bookman PostScript font instead of the Times
PostScript font, if Tgif.HasAlternateDefaultFonts is ``true'':

Tgif.Times-Roman: *-times new roman-medium-r-*--%d-*,Bookman-Light
Tgif.Times-Bold: *-times new roman-bold-r-*--%d-*,Bookman-Demi
Tgif.Times-Italic: *-times new roman-medium-i-*--%d-*,Bookman-LightItalic
Tgif.Times-BoldItalic: *-times new roman-bold-i-*--%d-*,Bookman-DemiItalic

Please note that certain X servers require the right-hand-side font specifications
to have all the dashes in place.

Tgif.DefaultCursor: [x_cursor,arrow,...]
This specifies the select cursor. Entries in <X11/cursorfont.h> (without the XC_
prefix) are valid names of the cursor. The default is arrow.

Tgif.DrawCursor: [x_cursor,arrow,...]
This specifies the cursor used when drawing objects. Entries in <X11/cursorfont.h>
(without the XC_ prefix) are valid names of the cursor. The default is the same as
Tgif.DefaultCursor.

Tgif.DragCursor: [x_cursor,arrow,...]
This specifies the cursor used when dragging. Entries in <X11/cursorfont.h>
(without the XC_ prefix) are valid names of the cursor. The default is hand2.

Tgif.VertexCursor: [x_cursor,arrow,...]
This specifies the cursor used in the select vertices mode. Entries in
<X11/cursorfont.h> (without the XC_ prefix) are valid names of the cursor. The
default is plus.

Tgif.FreeHandCursor: [x_cursor,arrow,...]
This specifies the cursor used in freehand drawing mode. Entries in
<X11/cursorfont.h> (without the XC_ prefix) are valid names of the cursor. The
default is pencil.

Tgif.RubberBandColor: COLORSTRING
This specifies the color to be used for rubber-banding (XORing). The default color
is the same as the foreground color.

Tgif.MaxColors: NUMBER
This specifies the maximum number of colors. Color0 through ColorMax, where Max is
NUMBER-1, in X defaults are queried. If NUMBER is greater than the default of 11,
Color11 through ColorMax must all exist in X defaults. Please see the GRAPHICAL
OBJECTS section for a list of the default colors.

Tgif.Color#: COLORSTRING
This specifies the correspondence between a color number and a color.

Tgif.DefaultColorIndex: NUMBER
This specifies the default color index if a certain color can not be found. The
default is 0. Please note Tgif.DefaultColor takes precedence over this X default.

Tgif.ShortCuts: ITEM1 ITEM2 ...
The ITEM specifies the correspondence between a key (may be case sensitive) and a
non-alphanumeric key command. Please see the SHORTCUTS section for details.

Tgif.MaxLineWidths: NUMBER
This specifies the maximum number of line widths. LineWidth0 through LineWidthMax,
ArrowWidth0 through ArrowWidthMax, and ArrowHeight0 through ArrowHeightMax, where
Max is NUMBER-1, in X defaults are queried. If NUMBER is greater than the default
value of 7, LineWidth7 through LineWidthMax, ArrowWidth7 through ArrowWidthMax, and
ArrowHeight7 through ArrowHeightMax must all exist in X defaults. Some default
values will be used for those that are not specified in the X defaults.

Tgif.DefaultLineWidth: NUMBER
This specifies the initial line width index. The default is 0.

Tgif.LineWidth#: NUMBER
This specifies a line width. The default line widths are 1, 2, 3, 4, 5, 6, and 7.

Tgif.ArrowWidth#: NUMBER
This specifies the width (when the arrow is pointing horizontally) of the arrow
head for arc and open-spline objects. The default arrow widths are 8, 10, 12, 14,
18, 20, and 22.

Tgif.ArrowHeight#: NUMBER
This specifies half the height (when the arrow is also pointing horizontally) of
the arrow head for arc and open-spline objects. The default arrow heights are 3,
4, 5, 6, 7, 8, and 9.

Tgif.MaxDomains: NUMBER
This specifies that NUMBER is the number of domains.
DomainPath0,DomainPath1,...,DomainPathM all must exist in X defaults. Here
M=NUMBER-1.

Tgif.DomainPath#: DOMAINSTRING
This specifies the correspondence between a domain number, a domain name, and the
path associated with a domain. Hence one DomainPath# X default is required for
each domain defined. Here the # should be replaced with a domain number. The
domain numbers should be 0,1,...,MAXDOMAINS-1, where MAXDOMAINS is set in the
MaxDomain X default above. The MaxDomain X default in combination with the
DomainPath# X default are required to use domains.

DOMAINSTRING contains strings which are separated by the ':' symbol. The first
string is the name of the domain. Each of the rest of the strings specifies a
directory where symbol files are to be searched when the Instantiate command is
executed (please see the HOW TO MAKE A BUILDING-BLOCK OBJECT section for details).
Another way to look at the DOMAINSTRING specification is that removing the first
string (which specifies the domain name) and the first ':' symbol, a DOMAINSTRING
has the form of the PATH csh(1) environment variable. For example, to specify the
symbol path for domain DEFAULT to look for symbol files, first in the library
directory /tmp/tgif/symbols, then in the current directory, DOMAINSTRING should be
set to the following value:

DEFAULT:/tmp/tgif/symbols:.

Tgif.DefaultDomain: NUMBER
This specifies the default domain when tgif starts up. The default is 0.

Tgif.PrintCommand: COMMAND
This specifies the print command used for printing the PostScript file. The
default is lpr(1). An example would be lpr -h -Pprintername. If COMMAND contains
a %s substring, the %s will be replaced by the full path name of the PostScript
file which is normally sent to the print command. Therefore, COMMAND without a %s
substring behaves identically to COMMAND %s. Please note that this only works when
running tgif without the -print command line option. This can be used to send a
font file to the printer before the tgif PostScript file is sent as in the
following example:

cat /somewhere/sansfex.pfa %s | lpr -Pmyprinter

Tgif.WhereToPrint: STRING
This specifies the initial print/export destination/format. STRING can be Printer,
EPS, PS, Bitmap, Text, EPSI, GIF, HTML, PDF, WinEPSI, PNG, JPEG, PPM, or NetList.
The default is EPS.

Tgif.PrintDirectory: PATH
This specifies the print directory when the output destination is not the printer.
The default is a null string, which means that the output goes into the directory
in which the current file resides.

Tgif.NoTgifIcon: [true,false]
If set to ``true'', tgif will not use its own icon window. In this case, one
should also set Tgif.UseWMIconPixmap described below to true. Modern window
managers usually do not allow an application to draw its own icon window, so this X
default would have no effect when tgif is running under these window managers. The
default is false.

Tgif.UseWMIconPixmap: [true,false]
If set to ``true'', tgif will use the standard icon pixmap. Also, Tgif.NoTgifIcon
will be ignored. The default is true.

Tgif.DontShowVersion: [true,false]
If set to ``true'', the tgif version will not be displayed on top of the tgif
window. The default is true.

Tgif.XBmReverseVideo: [true,false]
If set to ``true'', an invert bitmap operation will be performed when importing an
X11 bitmap file. The default is false.

Tgif.AskForXBmSpec: [true,false]
If set to ``true'', the user will be asked to specify magnification and geometry
for an X11 bitmap file being imported. Format of the specification is MAG=WxH+X+Y,
where MAG is the magnification, W and H specifies the width and height, and the
location specification can be +X+Y, +X-Y, -X+Y, and -X-Y. The '=' is mandatory if
any of the geometry information is specified. The default is false.

Tgif.AskForXPmSpec: [true,false]
If set to ``true'', the user will be asked to specify magnification and geometry
for an X11 pixmap file being imported. The format of the specification is the same
as for AskForXBmSpec. The default is false.

Tgif.StripEPSComments: (obsolete)
This X default became obsolete in tgif-4.0.11 because it turns out that it's not
always okay to strip PS comments (it should always be set to false).

Tgif.GuessXPmBgColor: [true,false]
If set to ``true'', then when tgif imports an X11 pixmap file with the first color
string being ' ' (the space character) or '`' (the back quote character), it will
treat the first color as a background color. This means that the specified color
in the X11 pixmap file will be changed to the current background color. The
default is false. (Please note that this default was true before patch 2 of
tgif-2.7. This X default is there for compatibility reasons; it should be
considered obsolete.)

Tgif.XPmOutputVersion: NUMBER
This specifies the XPM version number when outputting in the X11 pixmap format.
NUMBER can take on values 1 or 3. The default is 1.

Tgif.XPmInXGrabSCFormat: [true,false]
If Tgif.XpmOutputVersion is set to 1, setting this to ``true'' will force the X11
pixmap output to resemble what xgrabsc generates (i.e., color names will not be
used). The default is false.

Tgif.UseGrayScale: [true,false]
If set to ``true'', gray scales will be used for tiling patterns to speed up
printing. The default is false.

Tgif.AutoPanInEditText: [true,false]
If set to ``true'', auto panning will be used such that the text cursor is always
visible in text edit mode (except when the cursor is to the left or on top of the
paper). This should probably be turned off on slow servers. The default is true.

Tgif.PercentPrintReduction: NUMBER
This specifies the initial percent print reduction/magnification. The default is
100.

Tgif.ConstrainedMove: [true,false]
This specifies the initial move mode. When set to ``true'', moving or stretching
an object will cause the endpoints of all polylines or open-splines, whose
endpoints fall within the object, and may be the neighboring vertices, to be moved.
Please see the IDIOSYNCRASIES section for more details. The default value is
false.

Tgif.DoubleQuoteDoubleQuote: [true,false]
When set to ``true'', output of the double-quote character will be preceded by a
double-quote character; when set to false, output of the double-quote character
will be preceded by a back-slash character. The default value is false.

Tgif.GridSystem: [English,Metric]
This sets the initial grid system. The default is English.

Tgif.InitialGrid: NUMBER
This specifies the initial grid size. For the English grid system, NUMBER can be
-2, -1, 0, +1, or +2 for grid sizes of 1/32, 1/16, 1/8, 1/4, and 1/2 inch. For the
Metric grid system, NUMBER can be -1, 0, +1, or +2 for grid sizes of 1mm, 2mm, 5mm,
and 1cm. The default value is 0.

Tgif.DropObsIconAttrWhenUpdate: [true,false]
If set to ``true'', obsolete icon attributes will be dropped without confirmation
when the UpdateSymbols command is executed. If set to ``false'', a popup window
will prompt the user to specify what to do with the obsoleted icon attributes. The
default is false.

Tgif.UseRecentDupDistance: [true,false]
If set to ``true'', the most recent change in position produced by a combination of
a duplicate and a move command will be used for the new duplicate command.
Otherwise, some default distance will be used to position the duplicate. The
default is true.

Tgif.SplineTolerance: NUMBER
This specifies the tolerance of spline drawing. The smaller the number, the
smoother the spline. The default is 9 (min is 3 and max is 13).

Tgif.SplineRubberband: (obsolete)
If set to ``true'', spline rubber-bands will be used in drawing, moving, and
stretching open and closed splines. (This might not be desirable if the spline
contains too many vertices.) The default is true. This X default became obsolete
since tgif-4.2 due to the addition of structured spline objects.

Tgif.Synchronize: [on,off]
XSynchronize is called if this X default is set to ``on''. The default is off.

Tgif.DoubleClickUnIconify: [true,false]
If set to ``true'', double mouse clicks are used to de-iconify the icon window (in
this mode, the icon window ignores single mouse clicks and drags). The default is
false.

Tgif.MainMenuPinDistance: NUMBER
This specifies the horizontal distance (in pixels) the user needs to drag a popup
menu before the popup menu is to be pinned down. The default is 80. (If pinned
popup menus are not desired, then this should be set to a value greater than the
screen width.) Dragging the left mouse button can be used to move the pinned popup
menu; clicking the right button in the popup menu will remove it.

Tgif.DoubleClickInterval: NUMBER
This specifies the maximum interval (in milliseconds) between two mouse clicked to
be recognized as one double-click. The default is 300.

Tgif.HandleSize: NUMBER
This specifies (half) the size of the handle used to highlight objects. Its
allowable value is between 2 and 6. The default is 3.

Tgif.HistoryDepth: NUMBER
This specifies the size of the undo/redo buffer; negative values mean that the
buffer is unbounded. The default is -1.

Tgif.SaveTmpOnReturn: [true,false]
If set to ``true'', a tmpmodel file will be saved automatically before returning to
the driver. Otherwise, no files will be saved automatically. The default is true.

Tgif.ImportFromLibrary: [true,false]
If set to ``true'', the library directories specified by the current domain are
searched for .obj, .sym, xbitmap/xpixmap, and EPS files to import. Otherwise, the
current directory will be used as the starting point. The default is false.

Tgif.WarpToWinCenter: [true,false]
If set to ``true'', the mouse is warped to the center of popup windows. Otherwise,
the mouse is not warped. The default is true.

Tgif.SaveCommentsInSaveNew: [true,false]
If set to ``true'', "%%" type comments in the file will be stored in the newly
created file. The default is true.

Tgif.CanvasWindowOnly: [true,false]
If set to ``true'', only the canvas window will be displayed (this is a kind of the
``demo'' mode). The default is false.

Tgif.UsePsAdobeString: [true,false,NUMBER_1/NUMBER_2]
If set to ``true'', the first line in the PS or EPS file will be "%!PS-Adobe-2.0
EPSF-1.2". If set to ``false'', it is just "%!". If the PS-Adobe string confuses
the document manager (such as Transcript) on your site, you should set it to
``false''. If the third form is used, the first line will be "%!PS-Adobe-NUMBER_1
EPSF-NUMBER_2". The default is false.

Tgif.HalfToneBitmap: [true,false]
If set to ``true'', the Floyd-Steinberg half-tone method will be used when printing
in the X11 bitmap format. This is useful when the drawing contains X11 pixmap
objects. The default is false.

Tgif.ThresholdBitmap: [true,false]
If set to ``true'', a simple thresholding method will be used to decide whether a
bit is turned on or off when printing in the X11 bitmap format. If
Tgif.HalfToneBitmap is set to true, this X default is ignored. The default is
false.

Tgif.BitmapThreshold: NUMBER
This specifies the threshold value used in either the Floyd-Steinberg half-tone
algorithm or the simple thresholding algorithm. NUMBER must be between 0 and 1.
This X default is only active when either the Tgif.HalfToneBitmap or the
Tgif.ThresholdBitmap X default is set to true. The default value is 0.5 if
Tgif.HalfToneBitmap is true, and is 1.0 if Tgif.ThresholdBitmap is true (basically,
anything that is not white will be black).

Tgif.EPSIThresholdPreviewBitmap: [true,false]
If set to ``true'', a simple thresholding method will be used to decide whether a
bit is turned on or off in the preview bitmap when printing in the EPSI format.
The default is false.

Tgif.EPSIPreviewBitmapThreshold: NUMBER
This specifies the threshold value used in the simple thresholding algorithm to
decide whether a bit is turned on or off in the preview bitmap when printing in the
EPSI format. NUMBER must be between 0 and 1. The default value is 0.5 if
Tgif.EPSIThresholdPreviewBitmap is true, and is 1.0 if
Tgif.EPSIThresholdPreviewBitmap is false (basically, anything that is not white
will be black).

Tgif.GroupedTextEditable: [true,false]
If set to ``false'', only top level text objects and attributes of top level
objects can be edited when the drawing mode is set to the text mode. If set to
``true'', text objects and attributes everywhere can be edited. The default is
false.

Tgif.DefaultEPSScaling: NUMBER
This specifies the scaling factor applied to an imported PS or EPS image. As
mentioned in the IDIOSYNCRASIES section below, tgif treats 128 pixels as an inch
and PostScript treats 72 points as an inch. In order to have real-size PostScript
images, this parameter should be set to 1.7778 (which is 128/72). The default
value is 1.

Tgif.IntrCheckInterval: NUMBER
This specifies the number of objects drawn before tgif checks for interrupts. If
this is set to be 0 or less, interrupt is not allowed. The default value is 10.

Tgif.TiledPageScaling: NUMBER
This specifies the scaling value used when a multipage drawing in tiled page mode
is printed. Since most PostScript printers do not use the full page as the drawing
area, setting this number to 1 may get truncated output. The default value is 0.9.

Tgif.TGIFPATH: STRING
This specifies the directory where the files, mentioned in the FILES section below,
can be found. The TGIFPATH environment variable may override this option. The
default value is specified by the compiler option TGIF_PATH.

Tgif.TGIFICON: STRING
This specifies the name of the object file to be displayed when tgif is iconified.
If it starts with a / character, absolute path is used; otherwise, the actual path
of the icon file is $TGIFPATH/STRING where TGIFPATH is either defined using the X
defaults or an environment variable. The default value is ``tgificon.obj''.

Tgif.StickyMenuSelection: [true,false]
If set to ``true'', when patterns/linewidths/linestyles/... of objects are changed
using a menu action, the corresponding pattern/linewidth/linestyle/... becomes the
current selection. The default is true.

Tgif.PSBopHook: STRING
If specified, the following PostScript line is added at the beginning of each page
when printing to the printer or to a PS file,

userdict /STRING known { STRING } if

This option should only be used if one is very familiar with PostScript. (Setting
STRING to "tgif-bop-hook" is recommended since it would not have a name conflict
with existing software, such as dvips(1).)

Tgif.PSEopHook: STRING
If specified, the following PostScript line is added at the end of each page when
printing to the printer or to a PS file,

userdict /STRING known { STRING } if

This option should only be used if one is very familiar with PostScript. (Setting
STRING to "tgif-eop-hook" is recommended since it would not have a name conflict
with existing software, such as dvips(1).)

Tgif.MinimalEPS: [true,false]
If set to ``false'', comments such as %%Pages, %%DocumentFonts, %%EndComments,
%%BeginProlog, %%EndProlog, %%Page, %%Trailer, and %%EOF will be generated in an
EPS output. These comments may confuse certain ``document managers''. Therefore,
the default is true if Tgif.UsePsAdobeString is not specified (and the default is
false if Tgif.UsePsAdobeString is specified).

Tgif.InitialPrintInColor: [true,false]
If set to ``true'', color output (printing) mode is enabled on startup. Please
note that in black and white PS/EPS/EPSI printing mode, the white color will be
printed as black (only background will be printed as white). The default is true
(except when the -print command line option is used).

Tgif.InitialShowGrid: [true,false]
If set to ``false'', showing grid is disabled on startup. The default is true.

Tgif.InitialSnapOn: [true,false]
If set to ``false'', snapping to the grid points is disabled on startup. The
default is true.

Tgif.NoMenubar: [true,false]
If set to ``true'', no menubar will be shown initially. The default is false.

Tgif.NoStatusWindow: [true,false]
If set to ``true'', no Status Window will be shown initially. The default is
false.

Tgif.ReverseMouseStatusButtons: [true,false]
If set to ``true'', the left mouse status and the right mouse status are swapped.
This should be used when a ``left-handed mouse'' is used. The default is false.

Tgif.MinimalMenubar: [true,false]
If set to ``false'', the menu items in the Menubar Window will be the same as the
main popup menu. This would take up much more space. If set to ``true'', the
Page, PageLayout, HoriAlign, VertAlign, and MoveMode menus are collapsed into the
View cascading menu; the Font, TextStyle, and TextSize menus are collapsed into the
Text cascading menu; and the LineDash, LineStyle, LineType, LineWidth, Fill, and
Pen menus are collapsed into the Graphics cascading menu. The default is true.

Tgif.ColorBgInPrintingColorPS: [true,false]
If set to ``true'', the window background color is used as the background color
when generating color PostScript output. If set to ``false'', no background color
is used. The default is false.

Tgif.ScrollBarWidth: NUMBER
This specifies the width of a scroll bar. NUMBER must be between 2 and 16. The
default is 16.

Tgif.InitialPaperSize: STRING
The STRING specifies the initial width and height of the paper. STRING is in the
"<width> x <height>" form. <width> and <height> is a numeric value immediately
followed by either "in" (inch) or "cm" (centi-meter). The " x " that separate the
<width> and <height> is mandatory. If A4PAPER is defined in the Makefile, the
default value is "21cm x 29.7cm". If A4PAPER is not defined in the Makefile, the
default value is "8.5in x 11in".

Tgif.UpdateChildUsingAlignment: [true,false,no_overlap]
If set to ``true'' or 'no_overlap', when update_eps_child(), update_xbm_child(), or
update_xpm_child() internal command is executed, the current horizontal and
vertical alignments are used to place the EPS/XBM/XPM subobject. If the horizontal
alignment is L, C, R, S, or -, the subobject is aligned to the left, center, right,
center, or left, respectively, to the parent object. If the vertical alignment is
T, M, B, S, or -, the subobject is placed above, middle, below, middle, or below
the parent object if this X default is set to 'no_overlap'; the subobject is
aligned to the top, middle, bottom, middle, or below the parent object if this X
default is set to ``true''. If this X default is set to ``false'', the subobject
is placed left aligned and below the parent object. The default is false.

Tgif.GenerateImageMap: [true,false]
If set to ``true'', NCSA imagemap or CERN Clickable Image files will be generated
when print in GIF format. In this case, Tgif.XpmToGif, Tgif.ImageMapFileExtension,
Tgif.GifFileExtension, Tgif.ImageMapFileFormat, and Tgif.UseXPmVersion1ForImageMap
X defaults, described below, will be interpreted; otherwise, they are ignored.
Please see the section on GENERATING IMAGEMAP FILES for details. The default is
false.

Tgif.XpmToGif: STRING
The STRING specifies a command used to convert an XPM file to a GIF file. The
STRING must contain a %s substring to be replaced by the full path name of the XPM
file. The default is "xpmtoppm %s | ppmtogif".

Tgif.ImageMapFileExtension: STRING
The STRING specifies the file extension for a imagemap file. The default is "map".

Tgif.GifFileExtension: STRING
The STRING specifies the file extension for a GIF file. The default is "gif"
(lower case).

Tgif.ImageMapFileFormat: [NCSA,CERN]
The STRING specifies either the NCSA imagemap or the CERN clickable image format.
The default is NCSA for the NCSA imagemap format.

Tgif.UseXPmVersion1ForImageMap: [true,false]
The setting of this X default should depend on the setting of the Tgif.XpmToGif X
default above. If set to ``true'', XPM1 file is generated regardless of the
setting of the Tgif.XPmOutputVersion X default. The default is true.

Tgif.UsePaperSizeStoredInFile: [true,false]
If set to ``true'', the paper size information stored in a just opened file is
used. The default is true.

Tgif.OneMotionSelMove: [true,false]
If set to ``true'', one can select and move an object in one motion. The default
is false.

Tgif.TiffEPSI: (obsolete)
This X default became obsolete because TiffEPSI became a supported export format
since tgif-4.0.

Tgif.XbmToTiff: STRING
The STRING specifies a command used to convert an XBM file to a TIFF file. The
STRING must contain either one or two %s substring. The first %s substring is to
be replaced by the full path name of the XBM file. The optional second %s
substring is to be replaced by the full path name of the generated TIFF image. The
default is "xbmtopbm %s | pnmtotiff -none > %s".

Tgif.EPSIExportExtension: STRING
STRING specifies the file extension used for exporting EPSI files. The default is
"eps".

Tgif.HotListFileName: STRING
STRING specifies a full path name of a file used to store the hot file list. By
default, this file is .Tgif_hotlist in the user's home directory.

Tgif.@@@Viewer: STRING
STRING specifies an external viewer for an remote URL with a file extension of @@@.
STRING can be in 3 forms. It can be the string "NONE" to indicate that when such a
remote file is encountered, tgif should retrieve the file into a user specified
directory. For example, if one wishes to retrieve .gz files, one can use:

Tgif.gzViewer: NONE

STRING can also contain the string %S (S is capitalized), this indicates that %S is
to be replaced by the URL. For example, if one wishes to view .html files using
xmosaic, one can use:

Tgif.htmlViewer: xmosaic %S

Another form of STRING contains the string %s (S is lower-case), this indicates
that the remote file is to be retrieved into a user specified directory and view by
a tool. For example, if one wishes to view .gif files using xv, one can use:

Tgif.gifViewer: xv %s

Please note that this mechanism has precedence over the mechanism described in the
MIME TYPES AND MAILCAPS section above.

Tgif.AutoHyperSpaceOnRemote: [true,false]
If set to ``false'', tgif will not go into the hyperspace mode when a remote URL is
visited. The default is true.

Tgif.AllowLaunchInHyperSpace: [true,false]
If set to ``true'', launching of applications is enabled in the hyperspace mode
when a remote URL is visited. This is potentially very dangerous because the
application may do catastrophic damages. Therefore, it is strongly recommended
that it is set to false. The default is false.

Tgif.CanChangeAttrColor: [true,false]
If set to ``true'', color of an attribute can be changed when it is attached to an
object. The default is false.

Tgif.MimeTypesFile: STRING
STRING specifies a full path name of the MIME-types file. Tgif only uses the
type/subtype field in the MIME-types file and ignores all other fields. The
default MIME-types file is .mime.types in user's home directory.

Tgif.LocalRGBTxt: STRING
If one would like to override certain system colors, one can use STRING to specify
a full path name of a file to be consulted first before looking up the color in the
server. The file must be in the same format as the rgb.txt file. Namely, each
line contains 4 fields, the first 3 fields correspond to the red, green, and blue
components of the color, and the 4th field is the name of the color. A color
component must have a value between 0 and 255 (inclusive).

Tgif.PrintUsingRequestedColor: [true,false]
If set to ``true'', the color PostScript file being printed will use the requested
color instead of the color returned by the X server. The default is false.

Tgif.ShowMeasurement: [true,false]
If set to ``true'', the location of the cursor and the width and height of the
object being drawn/dragged/stretched will be shown. The default is false.

Tgif.ShowMeasurementUnit: STRING
The STRING specifies the unit used to display the measurement cursor. There are 2
basic formats. One is just the word "pixel", "inch", or "cm". There are also
known as basic units. Another format is NUM BASIC-UNIT/NEW-UNIT, where NUM is a
numeric value, BASIC-UNIT is one of the basic units, and NEW-UNIT is any string.
For example, "0.1 cm/mm" means that the new display unit is "mm" and 1 "mm" is 0.1
cm. "50 pixel/cm" is identical to "1 cm/cm" and "128 pixel/inch" is identical to
"1 inch/inch". The default is pixel.

Tgif.PageStyleLandscape: [true,false]
If set to ``true'', tgif comes up in landscape mode. The default is false.

Tgif.QueryZoomInPoint: [true,false] or [always,no_select,no_query,never]
If set to ``true'' (or ``always''), the user will be asked to select a center point
when zooming in. If set to ``no_select'', the user will be asked to select a
center point when zooming in if no objects are selected. If set to ``no_query'',
the position of the mouse is the zoom-in point. In this case, it is not desirable
to zooms in using a menu selection. The default is false (or never).

Tgif.GZipCmd: STRING
The STRING specifies a command used to gzip a .obj file. The command must produce
output into its stdout. If the command contains a %s substring, the %s will be
replace by the full path name of a temporary copy of the .obj file. The default is
"gzip -c".

Tgif.GUnZipCmd: STRING
The STRING specifies a command used to unzip a zipped tgif file (with extension
.obj.gz or .sym.gz) into a tgif file. The command must produce output into its
stdout. If the command contains a %s substring, the %s will be replace by the full
path name of a temporary copy of the zipped file. The default is "gunzip -c".

Tgif.HttpProxy: STRING
The STRING specifies a host name and a port number of an HTTP proxy server. Format
of the specification is <host>:<port>. If :<port> is omitted, 80 is used as the
default port number. The environment variable http_proxy has precedence over this
X default. The default is not to use an HTTP proxy server.

Tgif.FtpProxy: STRING
The STRING specifies a host name and a port number of an FTP proxy server. Format
of the specification is <host>:<port>. If :<port> is omitted, 21 is used as the
default port number. The environment variable ftp_proxy has precedence over this X
default. The default is not to use an FTP proxy server.

Tgif.InitialArrowStyle: [NONE,RIGHT,LEFT,DOUBLE]
This specifies the initial arrow style for polyline/open-splines/arcs. The default
is RIGHT.

Tgif.ShowPageInEPS: [true,false]
If set to ``true'', a showpage PostScript command will be generated for an EPS or
EPSI file. The default is true.

Tgif.MaxNavigateCacheBuffers: NUMBER
This specifies the number of cache buffers allocated to cache remote files (to
minimize communication). NUMBER must be non-negative. The default is 40.

Tgif.NumberFileInPrintOnePage: [true,false]
If set to ``true'', when PrintOnePage from the Print Menu is selected for a stacked
multipage drawing (e.g., file.obj), file_N with the proper file extension will be
generated, where N corresponds to the selected page number. The default is false.

Tgif.OneMotionTimeout: NUMBER
When Tgif.OneMotionSelMove is set to true, moving an object is considered to be
making a selection if the elapse time between mouse-down and mouse-up is smaller
than the timeout value specified by this X default (in milliseconds). The default
is 200.

Tgif.MinMoveInterval: NUMBER
When Tgif.OneMotionSelMove is set to false, moving an object is considered to be
making a selection if the elapse time between mouse-down and mouse-up is smaller
than the interval specified by this X default (in milliseconds). The default is 0.

Tgif.GifToXpm: STRING
The STRING specifies a command used to convert a GIF file to an XPM file. The
STRING must contain a %s substring to be replaced by the full path name of the GIF
file. The default is "giftopnm %s | ppmtoxpm".

Tgif.InitExportPixelTrim: LEFT_NUMBER,TOP_NUMBER,RIGHT_NUMBER,BOTTOM_NUMBER
The numbers specify the number of pixels to trim when printing or exporting in the
XBM, XPM, or GIF format. The use of these values forms an escape mechanism to fix
an idiosyncrasy that tgif can not figure out exactly how big the whole image is.
The default values are all 0's.

Tgif.QuantizingLevels: NUMBER
Some image functions such as Sharpen() uses convolution and may generate an image
that uses more than 256 colors which tgif can not handle. The NUMBER specifies the
number of colors to quantize down to when such a situation occurs. The default is
222.

Tgif.RotateCursor: [x_cursor,arrow,...]
This specifies the cursor used in the rotate mode. Entries in <X11/cursorfont.h>
(without the XC_ prefix) are valid names of the cursor. The default is crosshair.

Tgif.ColorLayers: [true,false]
If set to ``true'', each color is considered to be a different layer which can be
individually turned on and off. If a color layer is turned off, primitive objects
in that layer will not be visible. A grouped object only becomes invisible when
all its constituent objects are invisible. The default is false.

Tgif.TiffToXbm: STRING
The STRING specifies a command used to convert a TIFF file to an XBM file. This
command is used when importing an EPSI file generated by a Windows application.
The STRING must contain a %s substring to be replaced by the full path name of the
TIFF file. The default is "tifftopnm %s | pgmtopbm | pbmtoxbm".

Tgif.DefFixedWidthFont: STRING
The STRING specifies a font to be used as the default font for the Status Window,
menus, dialogboxes, etc. The default is "-*-courier-medium-r-
normal-*-14-*-*-*-*-*-iso8859-1".

Tgif.DefFixedWidthRulerFont: STRING
The STRING specifies a font to be used in the horizontal and vertical ruler
windows. The default is "-*-courier-medium-r-normal-*-10-*-*-*-*-*-iso8859-1".

Tgif.MenuFont: STRING
The STRING specifies a font to be used in menus. If this X default is not
specified, the default font is used in menus.

Tgif.BoldMsgFont: STRING
The STRING specifies a bold font to be used in buttons and dialogboxes. If this X
default is not specified but Tgif.MenuFont is specified, this will take on the
value of Tgif.MenuFont. If this X default and Tgif.MenuFont are not specified, the
default font is used in bold messages.

Tgif.MsgFont: STRING
The STRING specifies a thin font to be used in the Status Window and dialogboxes.
If this X default is not specified, the default font is used in messages.

Tgif.BggenToXpm: STRING
The STRING specifies a command for generating an X11 pixmap file to be executed
when RunBggen() is selected from the ImageProc Menu. The STRING must contain two
%s substrings. The first %s is to be replaced by a user specified string. The
second %s is to be replaced by the geometry of the image. The default is "bggen %s
-g %s | ppmquant 64 | ppmtoxpm". Please note that bggen(1) is part of the xv(1)
package.

Tgif.BggenToPpm6: STRING
The STRING specifies a command for generating a PPM file to be executed when
RunBggen() is selected from the ImageProc Menu. The STRING must contain two %s
substrings. The first %s is to be replaced by a user specified string. The second
%s is to be replaced by the geometry of the image. The default is "bggen %s -g
%s". Please note that bggen(1) is part of the xv(1) package.

Tgif.LittleEndianPpm6: [true,false]
If set to ``true'', when reading a PPM (or PGM) file that uses a maxval of 65535,
little endian format will be assumed (the standard for such a format calls for the
big endian format). The default is false.

Tgif.DefaultErrorDiffuseLevels: R_NUMBER G_NUMBER B_NUMBER
The NUMBERs specify the number of bits of red, green, and blue to be used when
ReduceToDefaultColors() or DefaultErrorDiffuse() are selected from the ImageProc
Menu. These values determine a set of default colors to be used for color
quantization for the ReduceToDefaultColors() and DefaultErrorDiffuse() methods.
R_NUMBER+G_NUMBER+B_NUMBER must be less than or equal to 8, and each number must be
greater than 0. The default is 2 2 2.

Tgif.MaxImportFilters: NUMBER
This specifies the maximum number of import filters. ImportFilter0 through
ImportFilterMax, where Max is NUMBER-1, in X defaults are queried. The default is
0.

Tgif.ImportFilter#: FILTERSTRING
This specifies an import filter. FILTERSTRING has 3 parts (separated by space
characters). The first part is the name of the filter. It must not contain a
space character. The second part contains semicolon-separated file extensions.
The third part is the actual filter command for converting the named external file
type to an X11 pixmap file. Please see the IMPORT RASTER GRAPHICS section for
details.

Tgif.ShowFileNameOnBrowse: [true,false]
If set to ``true'', file names will be shown when BrowseXBitmap(), BrowseXPixmap(),
or BrowseOther() are selected from the File Menu. The default is true.

Tgif.HtmlFileExtension: STRING
The STRING specifies the file extension used when printing in the HTML format. The
default is "html".

Tgif.GenerateHtmlHref: [true,false]
If set to ``true'' and when printing in the HTML format, the value of an href
attribute is parsed. If the value references a .obj file, it's changed to have a
HTML file extension. If it is set to ``false'', no conversion will be performed.
The default is true.

Tgif.RotationIncrement: NUMBER
This specifies the initial rotation increment in degrees. The default is 45.

Tgif.PSA4PaperSize: [true,false]
If set to ``true'' and A4 size paper is specified, the following line is added to a
PS/EPS/EPSI file (before "%%EndComments"):

%%DocumentPaperSizes: a4

The default is false.

Tgif.ShapeShadowSpec: STRING
The STRING specifies the initial horizontal and vertical offsets of a shape shadow.
If both values are zeroes, a shape is created without a shadow. When creating a
shape with a shadow, background fill pattern (3rd pattern in the first column of
the Fill Menu) usually gives the best result. The default is "0,0".

Tgif.StretchableText: [true,false]
If set to ``true'', stretchable text mode is the initial mode. The default is
true.

Tgif.EditTextSize: NUMBER
This specifies the text size to be used in editing existing text objects. NUMBER
should either be 0 or a value between 4 and 34 (inclusive). If NUMBER is 0, the
actual text size is used in editing existing text objects. The value of the edit
text size can later be changed by selecting SetEditTextSize() from the Properties
Menu. The default is 0.

Tgif.IconPixmap: (obsolete)
This X default became obsolete in tgif-4.2 because it clashes with the Xtoolket.
It's renamed to Tgif.WMIconPixmap.

Tgif.WMIconPixmap: STRING
STRING specifies the path of an XBM or XPM file to be used as tgif's desktop icon.
If STRING starts with a / character, absolute path is used; otherwise, the actual
path of the icon file is $TGIFPATH/STRING where TGIFPATH is either defined using
the X defaults or an environment variable. This X default is only enabled if
Tgif.UseWMIcon is set to true. The default value is ``tgificon.xbm'' (which is
compiled into tgif).

Tgif.TmpFileMode: NUMBER (OCTAL)
This specifies file mode for temporary and exported files. NUMBER must be an octal
number. If NUMBER is 0, no attempt is made to change the file mode. If this value
is specified (even if it's 0), it overrides the PSFILE_MOD compile option. There
is no default value.

Tgif.TitledPinnedMenu: [true,false]
If set to ``true'', pinned menu will have a title bar and left button is used for
selecting menu items in a pinned menu. The default is true.

Tgif.ColorFromXPixmap: STRING
STRING specifies the path of an XPM file to be used to load the initial colors. If
this X default is specified, the Tgif.Color# X defaults are ignored but
Tgif.AdditionalColors X default can be used to specify additional colors when tgif
starts up.

Tgif.VectorWarpSoftness: NUMBER
This specifies the softness value used when VectorWarp() is selected from the
ImageProc Menu. VectorWarp() lets the user warp pixels in an X11 pixmap object by
specifying a vector. The size of the affected area is controlled by this value,
which must lie between 1.0 and 4.0. The larger the value, the larger the affected
area. The default value is 2.0.

Tgif.ChangePropertiesOfAttrs: [true,false]
If set to ``true'', changing a property (such as font, font size, color, etc.) of
an object will change the property of the attributes attached to the object in the
same way. The default is false.

Tgif.ShiftForDiagMouseMove: [true,false]
If set to ``true'', certain mouse movements are restricted to multiple of 45
degrees. The default is true.

Tgif.UseRecentForDiagMouseMove: [true,false]
If set to ``true'', the object that is used as anchor for measuring the moving
distance is used as an anchor when objects. This only works if
Tgif.UseRecentDupDistance and Tgif.ShiftForDiagMouseMove are both set to true, The
default is false.

Tgif.FlushColormapOnOpen: [true,false]
If set to ``true'', colormap is flushed and the initial tgif colors are reloaded
when a new file is opened. The default is false.

Tgif.TransparentPattern: [true,false]
If set to ``true'', fill and pen patterns are transparent initially. The default
is false.

Tgif.DontReencode: STRING
For fonts that are not iso8859-1 encoded, non-ASCII portion of the font (characters
with bit 7 on) is by default reencoded as if it were iso8859-1 encoded. If this is
not desirable for a font, reencoding can be bypassed by including the first part of
the PostScript font name of the font in STRING. Fields in STRING are colon-
separated. For example, if STRING is "Times:Courier:Helvetica", PostScript fonts
that begins with "Times", "Courier", or "Helvetica" will not be reencoded. (Please
note that this X default overwrite the fonts specified by -D_DONT_REENCODE at
compile time.) Please also see the POSTSCRIPT CHARACTER ENCODING FOR INTERNATINOAL
CHARACTERS section for an example.

Tgif.AdditionalDontReencode: STRING
Use this X default to augment Tgif.DontReencode (or the fonts specified by
-D_DONT_REENCODE at compile time). STRING here is basically concatenated to the
STRING specified by Tgif.DontReencode (or the fonts specified by -D_DONT_REENCODE
at compile time).

Tgif.UnsignedInXBmExport: [true,false]
If set to ``true'', unsigned char will be used instead of char in exported XBM
files. The default is false.

Tgif.CommentInBitmapExport: [true,false]
If set to ``true'', a blank RCS Header comment will be prepended to exported XBM
and XPM files. The default is false.

Tgif.ShowFontSizeInPoints: [true,false]
If set to ``true'', font sizes are displayed in the unit of point sizes. The
default is false.

Tgif.DontCondensePSFile: [true,false]
By default, PS/EPS files generated by tgif are not condensed. If this X default is
set to ``false'', tgif will generate condensed PS/EPS files. The default is true.

Tgif.StripCondensedPSComments: (obsolete)
This X default became obsolete in tgif-4.0.11 because it turns out that it's not
always okay to strip PS comments (it should always be set to false).

Tgif.PdfFileExtension: STRING
The STRING specifies the file extension used when printing in the PDF format. The
default is "pdf".

Tgif.PsToPdf: STRING
The STRING specifies a command used to convert a PS file to a PDF file. The STRING
must contain 2 %s substrings to be replaced by the full path name of the PS file
and the full path name of the PDF file. The default is:

ps2pdf "%s" "%s"

(If you like to use "epstopdf", you can try setting this to "epstopdf %s
--outfile=%s".)

Tgif.EpsToTmpSvg: STRING
Converting an EPS file to an SVG file is done in two steps. First the EPS file is
converted to a temporary file and then the temporary file is converted to an SVG
file. By default, the uniconvertor(1) format is used for the temporary file. The
STRING here specifies a command for the first part and it must contain 2 %s
substrings to be replaced by the full path name of the EPS file and the full path
name of the temporary file. The default is:

pstoedit -dt -f sk "%s" "%s"

Tgif.TmpSvgToSvg: STRING
This X default is to be used in conjunction with Tgif.EpsToTmpSvg above. The
STRING here specifies a command for the second part of the conversion and it must
contain 2 %s substrings to be replaced by the full path name of the temporary file
and the full path name of the SVG file. The default is:

uniconvertor "%s" "%s"

Tgif.TmpSvgFileExtension: STRING
The STRING specifies the file extension used for the intermediary file when
converting an EPS to an SVG file. The default is "sk".

Tgif.3DLook: [true,false]
If set to ``false'', no 3D decoration of windows and buttons will be used. The
default is true.

Tgif.XpmDeckToGifAnim: STRING
The STRING specifies a command used to convert a list of GIF file to a GIF
animation file. The STRING must not contain any %s substring. The default is
"gifsicle -lforever --delay 10". Gifsicle's home page is
<URL:http://www.lcdf.org/gifsicle/>. One can also set this X default to "whirlgif
-loop -time 10". Whirlgif's home page is
<URL:http://www.msg.net/utility/whirlgif/>.

Tgif.GifAnimExplode: STRING
The STRING specifies a command used to explode an animated GIF file into its
constituent GIF files. The STRING must not contain any %s substring. The
constituent GIF files must have the following file names. If the animated GIF file
is named "foo.gif", the constituent GIF files must be named "foo.gif.0",
"foo.gif.1", etc. The default is "gifsicle -eU". Gifsicle's home page is
<URL:http://www.lcdf.org/gifsicle/>.

Tgif.Btn3PopupModeMenu: [true,false]
If set to ``true'', pressing the right mouse button in the canvas window will
generate the Mode Menu. The default is false.

Tgif.ScriptFraction: NUMBER
This specifies the size of the super/subscript relative to the size of the normal
text. The value must be between 0.2 and 0.8. The default value is 0.6.

Tgif.DeleteNextCharWithDelKey: [true,false]
If set to ``true'', pressing the Delete key on the keyboard will delete the
character to the right of the cursor in text mode. The default is true.

Tgif.SquareDoubleByteFonts: FONT_SPEC1 FONT_SPEC2 ...
Starting with version 4.0 of tgif, double-byte fonts are supported. But only
double-fonts where every character has the same width and height are supported.
Please see the SQUARE DOUBLE FONTS section for details.

Tgif.DefaultSingleByteFont: STRING
Using input methods (specified by the Tgif.DoubleByteInputMethod X default below),
one can mix english (single-byte) substrings within a double-byte string. The font
to use for the english substring is specified by this X default. The default is
Times.

Tgif.@@@ShowFontChar: OCTAL STRING
OCTAL STRING specifies a double-byte octal character to be used to represent a
double-byte font in the Choice Window when the font is selected. @@@ should be
replaced by the name of the double-byte font. Please see the SQUARE DOUBLE FONTS
section for examples.

Tgif.@@@ConvFromUTF8: STRING
The STRING specifies a command to be used to convert an UTF8 encoded string to a
string to be pasted into a text object when the current font is a double-byte font
whose name matches @@@. Please see the SQUARE DOUBLE FONTS section for examples.

Tgif.@@@ConvToUTF8: STRING
The STRING specifies a command to be used to convert a selected string (whose font
name matches @@@ and is a double-byte font) to be copied to the clipboard to a
string in the UTF8 format. Please see the SQUARE DOUBLE FONTS section for
examples.

Tgif.DoubleByteInputMethod: STRING
This specifies the input method for double-byte fonts. Currently, the following
values are supported: "xcin", "chinput", "kinput2", "xim", and "tgtwb5". If you
are using xcin-2.5 or above, please use "xim" instead of "xcin". The "tgtwb5"
input method is built into tgif and can take an optional parameter (by appending
",FONTNAME" after "tgtwb5") specifying a Big5 X font name to be used in selecting a
character. If FONTNAME is not specified, "-taipei-fixed-medium-r-
normal--16-150-75-75-c-160-big5-0" will be used. Please see the SQUARE DOUBLE BYTE
FONTS section for details.

Tgif.UseNKF: [true,false]
If set to ``true'', Network Kanji Filter (NKF) will be used. The default is false.

Tgif.CopyAndPasteJIS: [true,false]
If set to ``true'', copying and pasting text strings will go through additional JIS
to EUC conversion. The default is false.

Tgif.PreeditType: [overthespot,root]
If set to ``overthespot'', over-the-spot preediting will be used. The default is
root.

Tgif.Lang: STRING
This specifies the locale. The environment variables LANG can override this
setting.

Tgif.Modifiers: STRING
This specifies the locale modifiers. The environment variables XMODIFIERS can
override this setting.

Tgif.ConvSelection: STRING
This specifies the name of the selection used in converting kinput2 strings. The
default value is _JAPANESE_CONVERSION.

Tgif.VisibleGridInSlideShow: STRING
If set to ``true'', grids will be visible in slideshow mode. The default is false.

Tgif.SmoothScrollingCanvas: [off,jump,smooth]
If set to ``smooth'', scrolling the main canvas window will be smooth. However,
there may be a delay when scrolling starts to cache the image. If set to ``jump'',
scrolling the main canvas window will be jumpy. If set to ``off'', scrolling the
main canvas window will not change the canvas until the mouse button is released.
The default is jump.

Tgif.LightGrayColor: COLORSTRING
This specifies the color to be used for the background of buttons, menus, etc. The
default is gray75.

Tgif.DarkGrayColor: COLORSTRING
This specifies the color to be used for the shadow of buttons, menus, etc. The
default is gray50.

Tgif.DefaultObjectBackground: COLORSTRING
This specifies the color to be used for the background of objects. By default, the
default background color is used.

Tgif.UseImagePixelsForTrueColorExport: [true,false]
If set to ``true'', the color table of an exported XPM/GIF file will be obtained
from the actual image pixels for a TrueColor visual. The default is false.

Tgif.DialogboxUse3DBorder: [true,false]
If set to ``false'', dialogboxes will not have 3D borders. This should be used
with X servers such as X-Win32 because dialogboxes already have 3D borders. The
default is true.

Tgif.MenuFontSet: STRING
This X default is only used if tgif is compiled with the ENABLE_NLS compiler
option. The STRING specifies a list of fonts to be used in menus. STRING can be
``none'' to indicate not to use menu font set. The default is "-*-helvetica-
medium-r-normal--12-*-*-*-*-*-*-*,-*-*-medium-r-*--12-*-*-*-*-*-*-*".

Tgif.MsgFontSet: STRING
This X default is only used if tgif is compiled with the ENABLE_NLS compiler
option. The STRING specifies a list of fonts to be used in status messages.
STRING can be ``none'' to indicate not to use message font set. The default is
"-*-helvetica-medium-r-normal--12-*-*-*-*-*-*-*,-*-*-medium-r-*--12-*-*-*-*-*-*-*".

Tgif.BoldMsgFontSet: STRING
This X default is only used if tgif is compiled with the ENABLE_NLS compiler
option. The STRING specifies a list of fonts to be used in messageboxes. STRING
can be ``none'' to indicate not to use bold message font set. The default is
"-*-helvetica-bold-r-normal--12-*-*-*-*-*-*-*,-*-*-medium-r-*--12-*-*-*-*-*-*-*".

Tgif.BoldMsgFontDoubleByte: [true,false]
This X default is only used if tgif is compiled with the ENABLE_NLS compiler
option. This X default should be set to ``true'' if the strings used in
messageboxes may contain double-byte characters. The default is false.

Tgif.LocaleDir: STRING
This X default is only used if tgif is compiled with the ENABLE_NLS compiler
option. The STRING specifies a full path name of a locale directory.

Tgif.PsRegMarksInTiledPageMode: [true,false]
If set to ``true'', small crosshairs will be drawn at the corners defining the
clipping regions when printing/exporting PS/EPS files in the tiled page mode. The
greyness of the cross hairs will be determined by the Tgif.PsRegMarksGray X
default. The default is false.

Tgif.PsRegMarksGray: NUMBER
This specifies the greyness of the crosshairs used when
Tgif.PsRegMarksInTiledPageMode is set to true. The default value is 0.95

Tgif.PSFontAliases: PSFONTALIAS_SPEC1 PSFONTALIAS_SPEC2 ...
Font aliases can be used to represent different encoding, etc. Please see the
POSTSCRIPT CHARACTER ENCODING FOR INTERNATINOAL CHARACTERS section for details.

Tgif.DomainInIni: [true,false]
If set to ``true'', domain information will be loaded from the ~/.Tgif/domain.ini
file and all the menu items in the Domain submenu of the File Menu will be enabled.
The default is false.

Tgif.UndoRedoRestoreDrawingMode: [true,false]
If set to ``true'', the drawing mode just before an undo/redo operation will be
restored after undo/redo. The default is true.

Tgif.MenuRowsBeforeScroll: NUMBER
This specifies the maximum number of rows in a user-specifiable text menu (such as
the Font Menu and the FontSize Menu) before a vertical scrollbar is automatically
used. The default value is 20.

Tgif.MenuColsBeforeScroll: NUMBER
This specifies the maximum number of rows in a user-specifiable bitmap menu (such
as the Color Menu) before a horizontal scrollbar is automatically used. The
default value is 26.

Tgif.PngToXpm: STRING
The STRING specifies a command used to convert a PNG file to an XPM file. The
STRING must contain a %s substring to be replaced by the full path name of the PNG
file. The default is "pngtopnm %s | pnmdepth 255 | ppmquant 222 | ppmtoxpm".

Tgif.JpegToXpm: STRING
The STRING specifies a command used to convert a JPEG file to an XPM file. The
STRING must contain a %s substring to be replaced by the full path name of the JPEG
file. The default is "djpeg -gif -color 222 %s | giftopnm | ppmtoxpm".

Tgif.PbmToXbm: STRING
The STRING specifies a command used to convert a PBM file to an XBM file. The
STRING must contain a %s substring to be replaced by the full path name of the PBM
file. The default is "pbmtoxbm %s".

Tgif.PgmToXpm: STRING
The STRING specifies a command used to convert a PGM file to an XPM file. The
STRING must contain a %s substring to be replaced by the full path name of the PGM
file. The default is "ppmtoxpm %s".

Tgif.PpmToXpm: STRING
The STRING specifies a command used to convert a PPM file to an XPM file. The
STRING must contain a %s substring to be replaced by the full path name of the PPM
file. The default is "ppmquant 222 %s | ppmtoxpm".

Tgif.XpmToPng: STRING
The STRING specifies a command used to convert an XPM file to a PNG file. The
STRING must contain a %s substring to be replaced by the full path name of the XPM
file. The default is "xpmtoppm %s | pnmtopng".

Tgif.PngFileExtension: STRING
The STRING specifies the file extension for a PNG file. The default is "png"
(lower case).

Tgif.XpmToJpeg: STRING
The STRING specifies a command used to convert an XPM file to a JPEG file. The
STRING must contain a %s substring to be replaced by the full path name of the XPM
file. The default is "xpmtoppm %s | cjpeg".

Tgif.PpmToGif: STRING
The STRING specifies a command used to convert a PPM file to a GIF file. The
STRING must contain a %s substring to be replaced by the full path name of the PPM
file. The default is "ppmquant 222 %s | ppmtogif".

Tgif.PpmToPng: STRING
The STRING specifies a command used to convert a PPM file to a PNG file. The
STRING must contain a %s substring to be replaced by the full path name of the PPM
file. The default is "pnmtopng %s".

Tgif.PpmToJpeg: STRING
The STRING specifies a command used to convert a PPM file to a JPEG file. The
STRING must contain a %s substring to be replaced by the full path name of the PPM
file. The default is "cjpeg %s".

Tgif.Ppm6ToXpm3: STRING
The STRING specifies a command used to convert a PPM (P6) file to a version 3 XPM
file. The STRING must contain a %s substring to be replaced by the full path name
of the PPM file. The default is "ppmtoxpm %s".

Tgif.PpmQuantize: STRING
The STRING specifies a command used to quantize the colors of a PPM file down to a
specified number. The STRING must contain (1) a %d substring to be replaced by the
number of colors to reduce to and (2) a %s substring to be replaced by the full
path name of the PPM file. The default is "pnmquant %d %s".

Tgif.PpmFSQuantize: STRING
The STRING specifies a command used to quantize the colors of a PPM file down to a
specified number using the Floyd-Steinberg half-tone algorithm. The STRING must
contain (1) a %d substring to be replaced by the number of colors to reduce to and
(2) a %s substring to be replaced by the full path name of the PPM file. The
default is "pnmquant -fs %d %s".

Tgif.JpegFileExtension: STRING
The STRING specifies the file extension for a JPEG file. The default is "jpg"
(lower case).

Tgif.ProducedBy: STRING
When printing/exporting PS/EPS files, STRING will appear in a %%ProducedBy line in
a exported PS/EPS file. Please include your name and e-mail address in STRING.
The default is "(unknown)".

Tgif.Editor: STRING
STRING specifies a text editor to use for editing attributes. The STRING must
contain two %s substrings to be replaced by the window title and the full path name
of the text file. For example, you can use "xemacs -title '%s' '%s'". The default
is "xterm -title '%s' -e vi '%s'".

Tgif.GoHyperSpaceInSlideShow: [true,false]
If set to ``true'', hyperspace mode will be entered when tgif enters the slideshow
mode. The default is false.

Tgif.LineWidthIndexInSlideShow: NUMBER
This specifies the line width index to use when tgif is in the slideshow mode. The
default value is 4.

Tgif.MaxRecentFiles: NUMBER
This specifies the maximum number of files to remember in the recently used file
list. The default value is 10.

Tgif.ResetOriginOnAdvancePage: [true,false]
If set to ``true'', tgif will scroll to the left-top corner of the page when pages
are advanced. The default is false.

Tgif.UseMeasureTooltip: [true,false]
If set to ``true'', the location of the cursor and the width and height of the
object being drawn/dragged/stretched will be shown in a tooltip window. This X
default only takes effect if Tgif.ShowMeasurement is true. The default is false.

Tgif.MeasureTooltipXFollowMouse: [true,false]
If set to ``true'', the X position of the measurement tooptip will follow the
mouse. The default is false.

Tgif.MeasureTooltipYFollowMouse: [true,false]
If set to ``true'', the Y position of the measurement tooptip will follow the
mouse. The default is false.

Tgif.MeasureTooltipHorizontalPosition: [left,center,right]
Fix the X position of the measurement tooltip to the left, center, or right. This
X default only takes effect if Tgif.MeasureTooltipXFollowMouse is false. The
default is left.

Tgif.MeasureTooltipVerticalPosition: [top,middle,bottom]
Fix the Y position of the measurement tooltip to the top, middle, or bottom. This
X default only takes effect if Tgif.MeasureTooltipYFollowMouse is false. The
default is top.

Tgif.MeasureTooltipVerbose: [true,false]
If set to ``true'', additional information about the positions and sizes of objects
will be displayed in the tooltip window. The default is false.

Tgif.NoMinWinSize: [true,false]
If set to ``false'', tgif will have a minimum window size so that the whole panel
window is always visible. The problem with this setting is that some window
manager will show the wrong window size when you resize the window. This setting
is left for compatibility reasons. If set to ``true'', a side effect is that the
menubar will no longer automatically wraps around when Tgif.MinimalMenubar is set
to true. The default is true.

Tgif.AutoWrapMenubar: [true,false]
If set to ``true'', the menubar will automatically wrap around. If
Tgif.MinimalMenubar is set to false, menubar will always wrap around automatically.
The default is false.

Tgif.AutoEPSPreviewBitmap: [true,false]
If set to ``true'', when importing a PS/EPS file, tgif will automatically generate
a preview bitmap if the file does not already contain one. The default is false.

Tgif.PsToXbm: STRING
STRING specifies a command used to convert a PS file to a XBM file. The STRING
must contain a single %s substrings to be replaced by the full path name of the PS
file. Please note that the above command usually generates a bitmap that's much
larger than image in the file. Tgif automatically trims out the blank space
similar to the way pbmtoepsi works. The default is "gs -q -dNOPAUSE -sDEVICE=pbm
-sOutputFile=- -- "%s" | pbmtoxbm".

Tgif.TmpDirInHomeDir: [true,false]
If set to ``true'', tgif will use the $HOME/.Tgif directory as the temporary
directory (unless the Tgif.TmpDir X default below is used) and the compiler option
-DTMP_DIR is ignored. The default is false if the -D_TMP_DIR_IN_HOME_DIR compiler
option is used. The default is true if the -D_TMP_DIR_IN_HOME_DIR compiler option
is not used.

Tgif.TmpDir: STRING
STRING specifies a directory to be used as the temporary directory. The use of
this X default is discouraged, especially if tgif is compiled with
-DUSE_XT_INITIALIZE and a X resource file found in the directory search path
specified by the environment variable $XAPPLRESDIR is used. By default, tgif uses
/tmp as the temporary directory.

Tgif.ThumbnailGeometry: WIDTHxHEIGHT
This X default specifies the geometry of thumbnails. The default is 160x120.

Tgif.ThumbnailPadding: NUMBER
This specifies the padding (in pixels) for thumbnail images. The default value is
8.

Tgif.ThumbnailXGap: NUMBER
This specifies the horizontal gap (in pixels) for thumbnail images. The default
value is 16.

Tgif.ThumbnailYGap: NUMBER
This specifies the vertical gap (in pixels) for thumbnail images. The default
value is 0.

Tgif.ThumbnailX: NUMBER
This specifies the starting x location (in pixels) for thumbnail images. The
default value is 32.

Tgif.ThumbnailY: NUMBER
This specifies the starting y location (in pixels) for thumbnail images. The
default value is 32.

Tgif.ShowWireSignalName: [true,false]
If set to ``false'', when connecting ports, tgif will automatically place the
signal name and hide it. Otherwise, the user will be prompted to place the signal
name and it will be visible. The default is true.

Tgif.LandscapePdfSetPageDevice: (obsolete)
This X default became obsolete in tgif-4.1.42 because the name is misleading.
Please see Tgif.PdfSetPageDevice below.

Tgif.PdfSetPageDevice: [true,false]
If set to ``true'', when exporting PDF (or PS) files, tgif will use PostScript
"setpagedevice" command to specify the paper size in the generated PostScript file
before calling ps2pdf(1) (if exporting in PDF format). This should not be
necessary (and is considered a bug in ps2pdf). In the future, this X default can
be used to turn off the generation of the "setpagedevice" command when ps2pdf can
handle landscape PostScript files correctly.

Tgif.DeleteCmdAsCut: (obsolete)
This X default became obsolete in tgif-4.2.3. Now <Cntrl>x binds to the Cut
command. Tgif.EnableMouseWheel: [true,false] If set to ``false'', Button4 and
Button5 mouse wheel scrolling events will be ignored. The default is true.
Tgif.Btn2PopupMainMenu: [true,false] If set to ``false'', Button2 events will not
bring up the Main Menu in the canvas window. The default is true.

Tgif.NoChoiceWindow: [true,false]
If set to ``true'', no Choice and Message Windows will be shown initially. The
default is false.

Tgif.UseXPmVersion1ForXPmDeck: [true,false]
The setting of this X default should depend on the setting of the
Tgif.XpmDeckToGifAnim X default above. If set to ``true'', XPM1 file is generated
when a deck of X11 pixmap objects is being converted to a GIF animation file
regardless of the setting of the Tgif.XPmOutputVersion X default. The default is
true.

Tgif.SlideShowWindowOffsets: X_OFFSET,Y_OFFSET
The numbers specify the number of pixels to adjust for the slideshow mode. If only
one value is given, both X and Y offsets are set to the same value. The default
values are all 0's.

Tgif.SlideShowBorderColor: COLORSTRING
This specifies the color to be used for the area outside of the paper boundary in
slideshow mode. By default, the color of the border is the same as the background
color.

Tgif.ConvertToBezierSegments: NUMBER
This specifies the number of segments used in converting a polyline/spline object
to a Bezier curve. The default value is 50.

Tgif.TickMarkSize: NUMBER
This specifies the size of a tick mark to be used when tick marks are added at a
vertex of a polyline/polygon/spline. The default value is 8.

Tgif.NoModeWindow: [true,false]
If set to ``true'', no Mode Window will be shown initially. The default is false.

Tgif.MakeUnsavableInSlideShow: [true,false]
If set to ``true'', the current file will be made unsavable when slideshow mode is
entered. (If the current file contains auto page numbering objects, the file will
be made unsavable regardless of the setting of this X default.) The default is
false.

Tgif.SingleByteInputMethod: STRING
This specifies the input method for single-byte fonts. Currently, only "xim" is
supported.

Tgif.IgnoreSlideShowOffsetsInFile: [true,false]
If set to ``false'', the slideshow offsets stored in a file will override the
Tgif.SlideShowWindowOffsets setting. The default is true.

Tgif.ItalicMsgFont: STRING
The STRING specifies a italic font to be used in some buttons. If this X default
is not specified but Tgif.MenuFont is specified, this will take on the value of
Tgif.MenuFont. If this X default and Tgif.MenuFont are not specified, the default
font is used in italic messages.

Tgif.ItalicMsgFontSet: STRING
This X default is only used if tgif is compiled with the ENABLE_NLS compiler
option. The STRING specifies a list of fonts to be used in messageboxes. STRING
can be ``none'' to indicate not to use italic message font set. The default is
"-*-helvetica-medium-o-normal--12-*-*-*-*-*-*-*,-*-*-medium-r-*--12-*-*-*-*-*-*-*".

Tgif.BoldItalicMsgFont: STRING
The STRING specifies a bold italic font to be used in some text. If this X default
is not specified but Tgif.MenuFont is specified, this will take on the value of
Tgif.MenuFont. If this X default and Tgif.MenuFont are not specified, the default
font is used in bold italic messages.

Tgif.BoldItalicMsgFontSet: STRING
This X default is only used if tgif is compiled with the ENABLE_NLS compiler
option. The STRING specifies a list of fonts to be used in some text. STRING can
be ``none'' to indicate not to use bold italic message font set. The default is
"-*-helvetica-bold-o-normal--12-*-*-*-*-*-*-*,-*-*-medium-r-*--12-*-*-*-*-*-*-*".

Tgif.ExternalPsToEpsi: [true,false]
If set to ``true'', the execution of the pstoepsi() internal command will simply
invoke pstoepsi externally. The default is false.

Tgif.GsPath: STRING
The STRING specifies a full path name of the gs (ghostscript) program. The default
is "gs" (which implies that the "gs" excutable is in your PATH).

Tgif.CompoundObjWithTextStretchableForPSE: [true,false]
If set to ``false'', when executing the Precise Scale Everything command, a
compound object will not be stretched if it contains a text subobject. This X
default only has effect if tgif is in the non-stretchable text mode. (If tgif is
in the stretchable text mode, this X default is ignored.) The default is false.

Tgif.HideWindowsInSlideShow: [true,false]
If set to ``false'', tgif will keep all windows visible in slideshow mode.
Otherwise, only the canvas window will be visible in slideshow mode. The default
is true.

Tgif.PSDistillerNoImageCompress: [true,false]
If set to ``true'', tgif will generate PostScript code so that images in a
generated PostScript file will not be compressed by a distiller program such as
ps2pdf. The default is false.

Tgif.AdditionalPSSetup: STRING
If specified, the PostScript line specified by STRING is inserted at the end of
PostScript file setup (right before %%EndSetup). This option should only be used
if one is very familiar with PostScript. Here is an example to ask distiller
programs not to compress bitmap images:

Tgif.AdditionalPSSetup: \n\
systemdict /setdistillerparams known \n\
{ << /AutoFilterGrayImages false \n\
/AutoFilterColorImages false \n\
/ColorImageFilter /FlateEncode \n\
/GrayImageFilter /FlateEncode \n\
>> setdistillerparams } if

Tgif.PSFontNeedCharSubs: FONTSUB_SPEC1 FONTSUB_SPEC2 ...
The format of FONTSUB_SPEC is FONTNAME=TOKENNAME where FONTNAME is the name of a
PostScript font and TOKENNAME is the name of the extension for the
Tgif.PSCharSubs_TOKENNAME X default. For PostScript font names that begins with a
string that matches a FONTNAME part of a FONTSUB_SPEC, tgif will read the
Tgif.PSCharSubs_TOKENNAME X default to determine which characters will be
substituted.

For fonts that are not iso8859-1 encoded, non-ASCII portion of the font (characters
with bit 7 on) is by default reencoded as if it were iso8859-1 encoded when PS
output is generated. If this is not desired, different named PS characters can be
substituted for characters with bit 7 on. Please also see the POSTSCRIPT CHARACTER
ENCODING FOR INTERNATINOAL CHARACTERS section for an example.

Tgif.PSCharSubs_TOKENNAME: PSCHARSUBS_SPEC1 PSCHARSUBS_SPEC2 ...
TOKENNAME must match a FONTSUB_SPEC in the Tgif.PSFontNeedCharSubs X default. The
format for PSCHARSUBS_SPEC is OLDCHARCODE/NEWCHARNAME where OLDCHARCODE is a
character code in octal format and NEWCHARNAME is a PostScript character name to
use. For more information, please see the POSTSCRIPT CHARACTER ENCODING FOR
INTERNATINOAL CHARACTERS section.

Tgif.DrawTextFuncKey_F#: INTERNAL COMMAND LIST
This specifies the correspondence between a function key and a list of internal
commands. When function key F# is pressed when tgif is in the text drawing mode,
the corresponding list of internal commands is executed. Tgif only recognizes
function keys F1 through F12.

Tgif.PasteFromXSelectionOnly: [true,false]
If set to ``false'', if tgif has failed to perform a paste via the X Selections
mechanism, it will attempt the old style paste (directly fetch bytes from the X
server). This is mainly used with an older X servers. The default is true.

Tgif.PasteFromSelectionTimeout: NUMBER
This specifies the number of seconds for a paste operation to timeout. The default
value is 10.

Tgif.LengthLimit256InInsertChar: [true,false]
If set to ``true'', the maximum number of characters per line of text is set at
256. Additional characters are ignored. The default is false.

Tgif.JpegToPpm6: STRING
The STRING specifies a command used to convert a JPEG file to a PPM file in the P6
format. The STRING must contain a %s substring to be replaced by the full path
name of the JPEG file. The default is:

djpeg -ppm "%s"

Tgif.PngToPpm6: STRING
The STRING specifies a command used to convert a PNG file to a PPM file in the P6
format. The STRING must contain a %s substring to be replaced by the full path
name of the PNG file. The default is:

pngtopnm "%s"

Tgif.ObjectShadowOffsets: X_OFFSET,Y_OFFSET
The numbers specify the number of pixels to be offseted when creating a generic
object shadow. If only one value is given, both X and Y offsets are set to the
same value. The default values are all 2's.

Tgif.ObjectShadowColor: COLORSTRING
This specifies the color to be used for generic object shadow. The default value
is "#c0c0c0".

Tgif.IgnoreObjectShadowInfoInFile: [true,false]
If set to ``false'', the generic object shadow information stored in a file will
override the Tgif.ObjectShadowOffsets and Tgif.ObjectShadowColor settings. The
default is true.

Tgif.ReportMissingFonts: [true,false]
If set to ``true'', when tgif starts, missing X fonts will be printed to the
terminal. The default is false.

Tgif.CustomPatternDir: STRING
STRING specifies a directory that contains custom fill and pen patterns. Any valid
XBM file, encoding a bitmap of arbitrary dimensions, name pat#.xbm (for 3<=<=31) in
this directory will replace the corresponding default pattern .

Tgif.EnableTrueColorImages: [true,false]
If set to ``true'', on a TrueColor display, PPM and JPEG objects will use 24-bit
color. Tgif must be compiled with zlib support to enable this. The default is
true.

Tgif.AutoRotatePivot: [true,false]
If set to ``true'', user-specified rotation pivot will be disabled. The default is
false.

Tgif.RightMargin: STRING
The STRING specifies the right margin. The right margin must be specified with a
unit (the choices are "pixel", "in", or "cm"). The default is "1 in" if
Tgif.GridSystem is "English" and "2.5 cm" if Tgif.GridSystem is "Metric".

Tgif.EnableRightMargin: [true,false]
If set to ``true'', a simple right-margin will be used when entering text. This is
not a full-featured right-margin. It is only activated under the following
conditions: text object is not transformed, text is left-justified, text cursor is
not inside a superscript or a subscript, no zoome, and Tgif.EditTextSize is not
used. The default is false.

Tgif.NoOrientationIfPdfSetPageDevice: [true,false]
If set to ``true'', the "%%Orientation:" line is not generated in the PostScript
file if "setpagedevice" is active when exporting a PS/EPS/PDF file. Please see
Tgif.PdfSetPageDevice above. The default is false.

Tgif.PNGExportHasTransparentColor: [true,false]
If set to ``true'', the color specified by the Tgif.PNGExportTransparentColor X
default will be made transparent when printing in the PNG format. The default is
false.

Tgif.PNGExportTransparentColor: COLORSTRING
This specifies the color to be made transparent when printing in the PNG format.
By default, the default background color is used.

Tgif.PpmToPngWithTransparentColor: STRING
The STRING specifies a command used to convert a PPM file to a PNG file with a
transparent color. The STRING must contain exactly two %s substring to be replaced
by the transparent color and full path name of a PPM file. The default is
"pnmtopng -transparent '%s' '%s'".

Tgif.EnableThresholdFloodReplaceColor: [true,false]
If set to ``true'', threshold-based Flood Fill and Replace Color will be used. The
default is false.

Tgif.FloodReplaceColorThreshold: RED_THRESH,GREEN_THRESH,BLUE_THRESH
In threshold-based Flood Fill and Replace Color, after a pixel is selected, pixels
that have colors similar to the selected pixel will also change color. The
similarity is defined by these 3 threshold values. Each value must be between 0
and 255, inclusive. The default values are all 15's.

Tgif.UseStdPalette8: [true,false]
If set to ``true'', a standard 8 palette will be used as the startup colors. These
colors correspond to all 8 combination of 0x00 and 0xff in red, green, and blue
color components. If this X default is used, the Tgif.AdditionalColors X default
can be used to specify additional colors when tgif starts up. The default is
false.

Tgif.UseStdPalette27: [true,false]
If set to ``true'', a standard 27-color palette will be used as the startup colors.
These colors correspond to all 27 combination of 0x00, 0x80, and 0xff in red,
green, and blue color components. If this X default is used, the
Tgif.AdditionalColors X default can be used to specify additional colors when tgif
starts up. The default is false.

Tgif.UseStdPalette64: [true,false]
If set to ``true'', a standard 64-color palette will be used as the startup colors.
These colors correspond to all 64 combination of 0x00, 0x55, 0xaa, and 0xff in red,
green, and blue color components. If this X default is used, the
Tgif.AdditionalColors X default can be used to specify additional colors when tgif
starts up. The default is false.

Tgif.UseStdPalette216: [true,false]
If set to ``true'', a standard 216 palette will be used as the startup colors.
These colors are known as Mobile Web-safe colors and they correspond to all 216
combination of 0x00, 0x33, 0x66, 0x99, 0xcc, and 0xff in red, green, and blue color
components. If this X default is used, the Tgif.AdditionalColors X default can be
used to specify additional colors when tgif starts up. The default is false.

Tgif.UseMobileWebSafePalette: [true,false]
This is identical to Tgif.UseStdPalette216.

Tgif.UseOpenOfficeGalaxyPalette: [true,false]
If set to ``true'', the OpenOffice Galaxy (53-color) palette will be used as the
startup colors. If this X default is used, the Tgif.AdditionalColors X default can
be used to specify additional colors when tgif starts up. The default is false.

Tgif.UseOpenOfficeGooglePalette: [true,false]
If set to ``true'', the OpenOffice Google (80-color) palette will be used as the
startup colors. If this X default is used, the Tgif.AdditionalColors X default can
be used to specify additional colors when tgif starts up. The default is false.

Tgif.AdditionalColors: COLOR1, COLOR2 ...
If any of the Tgif.ColorFromXPixmap, Tgif.UseStdPalette8, Tgif.UseStdPalette27,
Tgif.UseStdPalette64, Tgif.UseStdPalette216, Tgif.UseMobileWebSafePalette,
Tgif.UseOpenOfficeGalaxyPalette, or Tgif.UseOpenOfficeGooglePalette X defaults is
used, additional startup colors can be specified using this X default. Since color
names can contain space characters, the colors must be separated by commas.

Tgif.DefaultColor: COLORSTRING
This specifies the default color if a certain color can not be found. It has
precedence over the Tgif.DefaultColorIndex X default. If this X default is not
specified, Tgif.DefaultColorIndex will determine the default color.
Tgif.GifToPpm6: STRING The STRING specifies a command used to convert a GIF file to
a PPM file in the P6 format. The STRING must contain a %s substring to be replaced
by the full path name of the GIF file. The default is:

giftopnm "%s"

ENVIRONMENT VARIABLE

TGIFPATH
This environment variable should be set such that the files, mentioned in the FILES
section below, can be found.

TGIFICON
This environment variable should be set to the name of the object file to be
displayed when tgif is iconified. By default, it is set to ``tgificon''. If it
starts with a / character, absolute path is used; otherwise, the icon file is
assumed to be $TGIFPATH/$TGIFICON.

TGIF_[Domain]
Obsoleted.

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