XFIG(1)

NAME
xfig - Facility for Interactive Generation of figures under X11

SYNOPSIS
xfig [options] [file]

DESCRIPTION
Xfig is a menu-driven tool that allows the user to draw and manipulate objects interactively under the X Window System. It runs under X version 11 release 4 or higher and requires a two- or three-button mouse. file specifies the name of a file to be edited. The objects in the file will be read at the start of xfig.

The bulk of the documentation fori xfig is in an HTML-based reference guide. See the Help menu in xfig or point your browser at Doc/html/index.html (provided with the xfig distribution, usually in the Doc/www directory). There are both English and Japanese versions.

When using a two-button mouse use the <Meta> key and the right button at the same time to effect the action of the middle button.

Xfig is available from ftp://www-epb.lbl.gov/xfig and usually from ftp://ftp.x.org/contrib/applications/drawing_tools/xfig .

The TransFig package is used when printing or exporting the output from xfig. The fig2dev program from the TransFig package is automatically called by xfig as a back-end processor to produce various types of output:

LaTeX, Metafont, PostScript or Encapsulated PostScript, tk (tcl/tk tool command language/tool kit package), GIF, JPEG, PCX, PNG, PPM, TIFF, XBM, XPM, AutoCAD Slide, IBM-GL (HP/GL), Pic PiCTeX, box, epic, eepic, and eepicemu.

See man fig2dev for all options.

The TransFig package is available from ftp://www-epb.lbl.gov/xfig and ftp://ftp.x.org/contrib/applications/drawing_tools/transfig .

OPTIONS
-help Print all command-line options for xfig and quit. -a[llow_neg_coords] Allow panning into the negative region of the canvas. This is the default -bal[loon_delay] msec Cause popup information balloons to be delayed by msec milliseconds. The default is 500 milliseconds. -bol[d] font Cause the font used for displaying the file name and confirmation messages to be font (default = 8x13bold). -butt[on] font Cause the font used for most buttons to be font (default = 6x13). -but_[per_row] number Specify the number of buttons wide the mode panel should be. This is useful in conjunction with the -pheight parameter to reduce the canvas height for small screens. -cbg color Use color as the background color for the canvas. If you want to set the background of everything in xfig (e.g. menus, etc.) use the general -bg option. -center Set the print option to print the figure centered on the page. This is the default. -centim[ers] Make centimeters the unit of choice. See also -metric. -cfg color Use color as the default color for objects. If you want to set the foreground of everything in xfig (e.g. menus, etc.) use the general -fg option. -deb[ug] Turn on debugging mode. Prints various debugging messages like font names etc. -dep[th] Choose depth of visual desired. Your server must support the desired visual and depth chosen. Use xdpyinfo to see what visuals and depths are supported. See also the -visual option. -dont_a[llow_neg_coords] Don't allow panning into the negative region of the canvas. The default is to allow panning in the negative region. -dontshowb[alloons] Prevents xfig from popping up the information balloons. See also -showballoons. -dontshowl[engths] Don't show lengths of lines as they are being drawn. This is the default. -dont_s[how_zero_lines] Don't show axis zero lines on the canvas. The default is to show them. -dontsw[itchcmap] Prevents xfig from switching to a private colormap if there aren't enough colors available in the default colormap. See also -max_image_colors. -exportL[anguage] language Specifies the default language to be used for when exporting a fig file. Choices are:

eepicemu	LaTeX picture + eepicemu macros
Name	Language

box	LaTeX box (figure boundary)
latex	LaTeX picture
epic	LaTeX picture + epic macros
eepic	LaTeX picture + eepic macros
eepicemu	LaTeX picture + eepicemu macros
pictex	PiCTeX macros
ibmgl	IBMGL (or HPGL)
eps	Encapuslated PostScript
ps	PostScript
pdf	PDF (Portable Document Format)
pstex	Combined PS/LaTeX (both PS and LaTeX parts)
textyl	Textyl special commands
tpic	TPIC
pic	PIC
mf	MF (MetaFont)
cgm	CGM (Computer MetaGraphics)
tk	Tk (of the tcl/tk fame)
sld	(AutoCad slide)
pcx	PCX
png	PNG
gif	GIF
jpeg	JPEG (JFIF)
tiff	TIFF
ppm	PPM (portable pixmap package)
xbm	X11 Bitmap
xpm	X11 Pixmap (XPM3 package)

-export_m[argin] width Set the size of the border margin around the figure for exporting to bitmap, PostScript, Encapsulated PostScript, or HTML MAP formats. This is in units of pixels (1/80th inch). The default is 0. -fli[pvisualhints] Flip left/right mouse indicator messages for mice whose buttons have been switched. The default is to NOT flip the messages. -flu[shleft] Set the print option to print the figure flush left. The default is to center the figure on the page. -geom[etry] [WxH][+X+Y] You may use the -geometry option or resource to size and/or position the xfig window, or you may use -pwidth and/or -pheight to specify the canvas size in inches or centimeters. If you use the -geom option to make the xfig window smaller than the default, you may have to use the -but_per_row option to tell xfig to put 3 or 4 buttons per row on the left mode panel. -hidd[entext] Start xfig with the hidden text mode for text objects. The Hidden attribute is used for figures that will be used with LaTeX and is applicable only to the display of the document in xfig. It means that the text itself is not shown onscreen, but only the string ``<text>''. This is to keep long sequences of LaTeX formatting commands from making the screen messy and hard to read. The default for the Hidden flag is off. -hide[depthmanager] Hide the depth manager panel. The default is to show the panel. -iconG[eometry] +X+Y Specifies the position for the icon. -im[age_editor] editor Specify bitmap editor to use when ``Edit Image'' button is pressed in Picture Object panel. -inc[hes] (or-imperial) Make inches the unit of choice. This is the default. -internalBW width Use lines of width width between all buttons and panels (default = 1). -jpeg[_quality] quality Set the quality factor for exporting to the jpeg format. The default is 75. -k[eyFile] compose-key-file Use compose-key-file instead of CompKeyDB for compose (meta) key database. If there are no ``/''s in the name, the file must reside in the xfig library directory, $XFIGLIBDIR, usually /usr/local/lib/X11/xfig. If there are any ``/''s in the name it is taken as is (not relative to $XFIGLIBDIR). If there is a leading ``~/'' in the string then the ``~'' is expanded to the user's home directory. -lan[dscape] Make xfig come up in landscape mode (10.5" x 8"). This is the default; however as the orientation is stored with Fig files, when you load a Fig file the orientation will change as required. This is only true for files of version 3.0 or higher.
See also -portrait. -lat[exfonts] Start xfig with LaTeX font selection. Normally, the PostScript fonts are available as the default. This flag selects the LaTeX fonts to start. -le[ft] Change the position of the side panel window to the left of the canvas window. This is the default. -li[brary_dir] directory Specify directory where Fig object libraries are located. There may be sub-directories there and sub-sub-directories, etc. -mag[nification] mag Set export and print magnification in %. -max[_image_colors] numcols Limit the number of colors used for imported images to numcols (default 64). -me[tric] Make centimeters the unit of choice. Also -centimeters.

    After xfig is started you may change the units from metric to imperial or vice versa from a popup menu available by pressing mouse button 3 in the units box where the two rulers meet. -mo[nochrome] Use black and white only. -mu[ltiple] Sets multiple page mode for print or export. See also -single. -nor[mal] font Cause the font used for the message window to be font. This font is also used on the canvas when the selected font is not available in an X11 font (default = 6x13). -nos[calablefonts] Disables use of the X11R5 or OpenWindows scalable fonts. You might want to use this for debugging. -not[rack] Turn off cursor (mouse) tracking arrows. -pag[eborder] color Draw the page border on the canvas in this color (default light blue). The page border is turned on by the -showpageborder (resource Fig.showpageborder) option, and shows the edges of the current export paper size. -pap[er_size] size Set the initial paper size for Export and Print. Choices are
    Letter (8.5" x 11"),
    Legal (8.5" x 14"),
    Ledger ( 17" x 11"),
    Tabloid ( 11" x 17"),
    A (8.5" x 11"),
    B ( 11" x 17"),
    C ( 17" x 22"),
    D ( 22" x 34"),
    E ( 34" x 44"),
    A4 (21 cm x 29.7cm),
    A3 (29.7cm x 42 cm),
    A2 (42 cm x 59.4cm),
    A1 (59.4cm x 84.1 cm),
    A0 (84.1 cm x 118.9cm),
    B5 (18.2cm x 25.7cm)

    Note that this doesn't affect the size of the drawing canvas. Use the -pheight and -pwidth options for that. -ph[eight] height Make the xfig canvas height high (where height is either cm or in, depending on the -metric setting). -po[rtrait] Make xfig come up in portrait mode (8.5" x 9"). See note about landscape mode. -pw[idth] width Make the xfig canvas width wide (where width is either cm or in, depending on the -metric setting). -righ[t] Change the position of the side panel window to the right of the canvas window (default: left). -rigi[d] Start xfig with the rigid text mode for text objects. The Rigid attribute forces text to remain the same size even if inside a compound object that is scaled up or down. The default is off. -ru[lerthick] Set the thickness of the top and side rulers in pixels. The default (and minimum) is 24. -sc[alablefonts] Allows use of the X11R5 or OpenWindows scalable fonts (this is the default). If the scalable fonts aren't available xfig will automatically switch to non-scaling fonts. -showa[llbuttons] Show all the xfig indicator buttons instead of only those relevant to the current drawing mode. Normally, the buttons line width, area-fill, grid mode, text size, etc. are only visible when they are relevant to the current drawing mode. The -showallbuttons option makes all of the indicator buttons visible at all times. This takes up more screen real estate, but allows the user to see all settable parameters. -showb[alloons] Forces xfig to pop up the information balloons when the mouse passws over a button. This is the default. See also -dontshowballoons. -showd[epthmanager] Show the depth manager panel. This panel lets one show or hide objects at various depths. This is the default. -showl[engths] Makes xfig show the lengths of lines being drawn, in red text near the line itself. Also, when points are moved or added. In addition, imagine a triangle formed with the line segment as the hypotenuse, and a vertical and horizontal line forming the other two sides. These lines and their lengths are also drawn in red as the point is moved or added. This mode is ignored when drawing in freehand mode.
    This flag may be toggled by pressing <Meta>i (default). -showp[ageborder] Makes xfig show the border of the current paper size in the color specified by the -pageborder option (default light blue). -show_[zero_lines] Show axis zero lines on the canvas. This is the default -si[ngle] Sets single page mode for print or export. This is the default. See also -multiple. -spec[ialtext] Start xfig with the special text mode for text objects. Special text means that special characters in the string are not specially processed but are passed directly to LaTeX. This is most useful for writing LaTeX equations. If this flag is not set, then the backslash character '\' is changed to the \backslash command, a brace '{' is turned into a brace command \{, etc. -spel[lcheckcommand] command Use command for the external spell checking program when using the spell check/search/replace popup. The string command should include the string ``%s'' which is replaced by a temporary filename. Default is ``spell %s''. -spinner_d[elay] msec The delay (in milliseconds) before the spinner will automatically count up or down when the button is pressed. Spinners are the (numeric) text widgets with an up- and down-arrow, which when clicked, cause the value to be incremented/decremented. The default is 500 milliseconds. -spinner_r[rate] msec The rate (in milliseconds) at which the spinner will count when the up- or down-arrow is pressed. -startfi[llstyle] stylenumber Set the starting fill style for area fill (-1 to 21). -startfo[ntsize] pointsize Set the default font size for text objects (default = 12pt). -startg[ridmode] modenumber Set the starting grid mode (0 to 3). Mode 0 is no grid. In imperial (inches) mode, grid mode 1 is 1/4 inch, mode 2 is 1/2 inch and mode 3 is 1 inch. In metric mode, grid mode 1 is 5mm, mode 2 is 1cm and mode 3 is 2cm. -startla[texFont] font Set the starting font name for LaTeX fonts. -startli[newidth] width Set the starting line width. -startpo[snmode] modenumber Set the starting point positioning mode (0 to 4) In imperial (inches) mode, positioning mode 0 is ``any'', mode 1 is 1/16 inch, mode 2 is 1/4 inch, mode 3 is 1/2 inch and mode 4 is 1 inch. In metric mode, mode 0 is ``any'', mode 1 is 1mm, mode 2 is 5mm, mode 3 is 10mm and mode 4 is 20mm. -startp[sFont] font Set the starting font name for PostScript fonts. -startt[extstep] stepsize Set the starting text step. -ta[blet] Specifies that xfig should use the input tablet instead of the mouse for drawing. You must have the XInputExtension in your X server and an input tablet for this to work. Also, you must modify the Imakefile to include the USETAB and TABLIB variables. -track Turn on cursor (mouse) tracking arrows (default). -tran[sparent_color] color_number Make the transparent color for GIF export color_number. This number is the color number according to the xfig color panel, starting at 0 (black) and ending at 31 (gold), or may be a user-defined color number, which is 32 or higher. -up[date] file [ file ... ] Run xfig in an "update" mode, where it will read each Fig file specified on the command line and write it out to the original file, in the current file format for the version of xfig being run. The original Fig file will be preserved with the suffix .bak attached to the name.
    In this mode, xfig doesn't connect the X server, so no window is opened, and it exits when finished. -users[cale] scale Set the multiplier for displayed line lengths etc. This factor is multiplied by the actual length, radius or diameter of the object currently being drawn on the canvas. It is useful for making scale drawings, where e.g. 1 inch = 1 foot (userscale = 12.0) or 1cm = 1m (userscale = 100.0). -useru[nit] units The units string is printed with the length information when drawing objects. For example if the userscale = 1.0 and the userunit = ft then a line which is 3 inches long on the canvas would be displayed as ``length = 3 ft'' when it is being drawn.

    After xfig is started you may change the userscale and the userunit from a popup menu available by pressing mouse button 3 in the units box where the two rulers meet. -visual visualname Use visualname as the visual for xfig. The names are TrueColor (case is not important), StaticColor, DirectColor, StaticGray, GrayScale and PseudoColor. xfig uses the default visual unless this is specified. Your server must support the desired visual. Use xdpyinfo to see what visuals and depths are supported. See also the -depth option. -zoom zoomscale Set the starting zoom scale.

X RESOURCES and DEFAULTS
The overall widget name(Class) is xfig(Fig). These resources correspond to the command line arguments:

    Name	Class	Type	Default	Command-line
    Name	Class	Type	Default	Command-line
    				equivalent

    allow_neg_coords	NegativeCoordinates	boolean	on	-allow_neg_coords,
    				-dont_allow_neg_coords,
    balloon_delay	balloonDelay	integer	500 (ms)	-balloon_delay
    boldFont	Font	string	8x13bold	-bold
    but_per_row	But_per_row	int	2	-but_per_row
    buttonFont	Font	string	6x13	-button
    canvasbackground	Background	string	white	-cbg
    canvasforeground	Foreground	string	black	-cfg
    debug	Debug	boolean	off	-debug
    depth	Depth	integer	*	-depth
    dont_switch_cmap	Dont_switch_cmap	boolean	false	-dontswitchcmap
    exportLanguage	ExportLanguage	string	eps	-exportLanguage
    export_margin	Margin	integer	0	-export_margin
    flipvisualhints	Hints	boolean	false	-flipvisualhints
    flushleft	FlushLeft	boolean	false	-flushleft
    image_editor	ImageEditor	string	xv	-image_editor
    inches	Inches	boolean	true	-inches,
    				-centimeters,
    				-imperial,
    				-metric
    internalborderwidth	InternalBorderWidth	integer	1	-internalBW
    justify	Justify	boolean	false	-left (false),
    				-right (true)
    jpeg_quality	Quality	integer	75	-jpeg_quality
    keyFile	KeyFile	string	CompKeyDB	-keyFile
    landscape	Orientation	boolean	true	-Landscape,
    				-Portrait
    latexfonts	Latexfonts	boolean	off	-latexfonts
    library_dir	Directory	string	~/xfiglib	-library_dir
    magnification	Magnification	float	100	-magnification
    max_image_colors	Max_image_colors	integer	64	-max_image_colors
    monochrome	Monochrome	boolean	false	-monochrome
    multiple	Multiple	boolean	false	-multiple
    normalFont	Font	string	6x13	-normal
    pageborder	Color	string	color	-pageborder
    page_size	Pagesize	string	Letter/A4	-page_size
    pheight	Height	float	8(9.5)	-pheight
    pwidth	Width	float	10(8)	-pwidth
    rulerthick	RulerThick	integer	24	-rulerthick
    scalablefonts	ScalableFonts	boolean	true	-scalablefonts
    showallbuttons	ShowAllButtons	boolean	false	-showallbuttons
    showballoons	ShowBalloons	boolean	true	-showballoons,
    				-dontshowballoons
    showdepthmanager	Hints	boolean	true	-showdepthmanager,
    				-dontshowdepthmanager
    showpageborder	Debug	boolean	true	-showpageborder,
    				-dontshowpageborder
    showlengths	ShowLengths	boolean	false	-showlengths,
    				-dontshowlengths
    show_zero_lines	Axis	boolean	true	-show_zero_lines,
    				-dont_show_zero_lines
    single	Single	boolean	true	-single
    specialtext	SpecialText	boolean	false	-specialtext
    spellcheckcommand	spellCheckCommand	string	spell %s	-spellcheckcommand
    spinner_delay	spinnerDelay	integer	500 (ms)	-spinner_delay
    spinner_rate	spinnerRate	integer	100 (ms)	-spinner_rate
    startfillstyle	StartFillStyle	integer	0	-startfillstyle
    startfontsize	StartFontSize	float	12	-startfontsize
    startgridmode	StartGridMode	integer	0	-startgridmode
    startlatexFont	StartlatexFont	string	Default	-startlatexFont
    startlinewidth	StartLineWidth	integer	1	-startlinewidth
    startposnmode	StartPosnMode	integer	1	-startposnmode
    startpsFont	StartpsFont	string	Times-Roman	-startpsFont
    starttextstep	StartTextStep	float	1.2	-starttextstep
    trackCursor	Track	boolean	on	-track,
    				-notrack
    transparent_color	Transparent	integer	-2 (none)	-transparent_color
    userscale	UserScale	float	1.0	-userscale
    userunit	UserUnit	string	in(cm)	-userunit
    visual	Visual	string	*	-visual
    zoom	Zoom	float	1.0	-zoom
    * Default visual and depth depend on the X server. Use xdpyinfo to see what visuals
    and depths are supported.

BUGS and RESTRICTIONS
Please send bug reports, fixes, new features etc. to:
xfig-bugs@epb1.lbl.gov (Brian V. Smith)

When reporting a bug, please first check if the problem is mentioned in the FAQ section of the HTML files (xfig Help menu).

If it is not mentioned there, be sure to report the operating system you are using (e.g. SunOS 4.1.3), type of X server and version (OpenWindows 3, X11R6.4, XFree86 3.2.2, etc) and color depth (e.g. 8bpp, 16bpp), and most importantly the version of xfig or fig2dev that is having the problem.

It is also VERY useful to me if you can provide a stack trace from a debugger such as gdb, dbx, ups, etc, if the bug causes xfig to crash.

Because of the difference of some fonts in some X servers and the PostScript fonts on printers, text alignment can be problematic.

Not all operations employ smart redrawing of objects which are altered as a by product of the operation. You may need to use Redraw in these cases.

Some servers do not allow bitmaps/pixmaps taller than the screen height or wider than the screen width. That is why there is a limit on the width of the top ruler and height of the side ruler. If you need wider/taller rulers AND your server allows bigger pixmaps, you may define MAX_TOPRULER_WD and/or MAX_SIDERULER_HT in your Imakefile in the DEFINES line. For example, to have a maximum top ruler width of 1160 pixels, add -DMAX_TOPRULER_WD=1160 to your DEFINES line in the Imakefile.

If the image is panned or the xfig window iconified and de-iconified during the middle of an operation (e.g. while drawing a line), the picture will be distorted. This can be corrected using Redraw after the operation is complete.

When zoomed very large, the length of dashes in dashed lines will top out at 255 pixels long. This is due to a restriction in X that the dash list is defined by char (255 pixels maximum for a dash). The figure will print correctly, however.

When you do a copy/rotate with multiple copies, only the creation of the last object can be undone with the Undo button.

Modifications to text using the popup search/update/replace/spell check panel cannot be undone.

See the README file for troubleshooting.

SEE ALSO

fig2dev(1) (TransFig package)

gs(1) (Ghostscript PostScript previewer)

ACKNOWLEDGEMENT
(From the original author, Supoj Sutanthavibul): Many thanks goes to Professor Donald E. Fussell who inspired the creation of this tool.

(From current maintainer Brian Smith): Thanks to all the users who have contributed to xfig, especially Paul King who, besides adding many features, revamped the look and feel which became version 2.1.

COPYRIGHT
Original Copyright (c) 1985 by Supoj Sutanthavibul
Parts Copyright (c) 1994-1999 by Brian V. Smith
Parts Copyright (c) 1991 by Paul King
Other Copyrights may be found in various files

Any party obtaining a copy of these files is granted, free of charge, a full and unrestricted irrevocable, world-wide, paid up, royalty-free, nonexclusive right and license to deal in this software and documentation files (the "Software"), including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons who receive copies from any such party to do so, with the only requirement being that this copyright notice remain intact.

Note that although I work at Lawrence Berkeley National Laboratory (LBNL) I don't speak for LBNL nor do I represent LBNL with respect to my work on TransFig and xfig, nor does LBL make any representations about the suitability of this software for any purpose.

Here is the legal part:

THE LAWRENCE BERKELEY NATIONAL LABORATORY DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

PostScript is a trademark of Adobe Systems Incorporated.

Parts Copyright (C) 1989 by Jef Poskanzer.
Copyright notice for pbmplus code:

Permission to use, copy, modify, and distribute this
software and its documentation for any purpose and without
fee is hereby granted, provided that the above copyright
notice appear in all copies and that both that copyright
notice and this permission notice appear in supporting
documentation.  This software is provided ``as is'' without
express or implied warranty.

FILES

CompKeyDB
    Data base of compose (meta) key sequences for 8-bit characters. Must be installed in $(XFIGLIBDIR) with ``make install'', or may be specified with command line option -keyFile or X toolkit resource keyFile. See the Imakefile.

/usr/lib/X11/xfig
    This directory contains the html documentation, the above mentioned CompKeyDB file, and a directory of libraries containing Fig objects such as electrical symbols, logic symbols, etc.

Fig.ad and Fig-color.ad
    Application defaults files which are automatically installed in the system app-defaults directory with the make install command.

Doc/FORMAT3.2
    Description of Fig file format.

README
    Installation instructions and troubleshooting.

CHANGES
    Description of bug fixes/new features.

AUTHORS
Many people have contributed to xfig. Here is a list of the people who have contributed the most (in chronological order):

Version 1:

Original author:
Supoj Sutanthavibul, University of Texas at Austin

The LaTeX line drawing modes were contributed by:
Frank Schmuck, Cornell University

Original X11 port by:
Ken Yap, Rochester

Variable window sizes, cleanup of X11 port, right hand side panel:
Dana Chee, Bellcore

Cleanup of color port to X11 by:
John T. Kohl, MIT

Version 2.0:

Area fill, multiple line thicknesses, multiple fonts and font sizes, bottom panel, line style/thickness, (and anything else that wasn't written by the others) by:
Brian Smith
(standard disclaimer applies)
(bvsmith@lbl.gov)

Popup change-object menu by:
Jon Tombs
Frank Schmuck

Zooming and panning functions, shift key select mechanism by:
Dieter Pellkofer
Henning Spruth

Depth feature by:
Mike Lutz

Cut/Paste by:
Tom Tkacik

Version 2.1:

Indicator panel, file menu popup, print menu popup, panning with rulers, mouse function window, regular polygon, rubberbanding of circles/ellipses, filled splines on canvas, dashed/dotted splines on canvas, update button, arbitrary angle rotation of objects, alignment in compound, object scaling, constrained copy/move, corner markers for compound, context sensitive corner markers, smarter redraw, undo for compound and point move for boxes, cancel object creation, point positioning to three resolutions, TransFig scalable text, hidden text, special text, save of figure on crash by:

Paul King (king@cs.uq.oz.au)
with help from:
Brian Smith and Micah Beck (beck@cs.utk.edu)

Encapsulated PostScript importing by:
Brian Boyter

Pan/zoom with ctrl key/mouse by:
Henning Spruth

International characters by:
Herve Soulard

Directory Browser based on XDir by:
Win Treese, Digital Equipment Corporation

Rotated ellipses by:
James Tough, Dept. of Computer Science, Heriot-Watt University, Scotland

Rotated text from the xvertext package by:
Alan Richardson, Space Science Centre, School of MAPS, University of Sussex

Popup scale menu and dynamic switching between inches and cm by:
Paul King (king@cs.uq.oz.au)

Extensive man page formatting revisions by:
David W. Sanderson

Display Postscript code for IBM RS/6000 by:
Dave Hale (dhale@green.mines.colorado.edu)

Version 3.0:

New arrowhead types, separate pen/fill colors, new file protocol, more colors with extended color popup panel, new arc style, new fill patterns (bricks, etc), new line join and cap styles, export offset and file load offset, XPM import, XBM import and export (and anything else that wasn't written by the others) by:
Brian Smith
(Note: the color popup panel was based on xcoloredit by Richard Hesketh)

GIF header reading code by:
David Koblas from the giftoppm part of the pbmplus package

XPM export code (using XPM3 libraries) by:
Karel van Houten (K.H.C.vanHouten@research.ptt.nl)

Higher figure resolution (1200dpi) by:
Ross Martin (martin@trcsun3.eas.asu.edu)

Color quantization using neural network by:
Anthony Dekker (dekker@ACM.org)
[NEUQUANT Neural-Net quantization algorithm by Anthony Dekker, 1994. See ``Kohonen neural networks for optimal colour quantization'' in ``Network: Computation in Neural Systems'' Vol. 5 (1994) pp 351-367. for a discussion of the algorithm.]

Floyd-Steinberg algorithm for dithering color images on monochrome displays lifted from the Pbmplus package by Jef Poskanser.

rotate/flip objects around/about selected anchor point and multiple copies of objects by:
Uwe Bonnes (bon@lte.e-technik.uni-erlangen.de)

Input tablet extension by:
Greg LaCoste (greg@seismo.do.usbr.gov)

Version 3.1:

The only difference between protocol version 3.0 and version 3.1 is that the position of the ``magnet'' has been shifted by 14 fig units. In the 2.1 and older versions of xfig the grid was in multiples of 5 fig units, but they were on intervals 4, 9, 14, 19, etc. When version 3.0 was created, coordinates were simply multiplied by the ratio of the resolutions (1200/80 = 15) so values like 4 became 60 instead of 74 ((4+1)*15 - 1).

The JPEG import/export code uses the Independent JPEG Group software (see jpeg/README for details)

Image browser, editor and screen capture features by:
Jim Daley (jdaley@cix.compulink.co.uk)

Version 3.2:

The changes to the version 3.2 file protocol are the addition of the paper size, print/export magnification, single/multiple page indicator and a transparent color name used for GIF export to the header of the file.
The other difference in the version 3.2 protocol is the mathematical model used for splines. The new version uses X-splines which allows the user to mix interpolation and approximation points in a same curve. More precisely, it means that an X-spline curve is neither an interpolated spline nor an approximated one, it is BOTH (the behaviour of each point is controlled by one single parameter called ``shape factor''). For additional information about X-splines, see:

  "X-Splines: A Spline Model Designed for the End User"
  by C. Blanc and C. Schlick, Proceedings of SIGGRAPH'95
  http://dept-info.labri.u-bordeaux.fr/~schlick/DOC/sig1.html

Caveat: Because previous spline models (quadratic B-splines and Bezier with hidden points) are no longer supported, curves that are present in version 3.1 and older files are automatically converted to X-splines. This translation is only an approximation process. It means that the converted curves are not exactly the same as the original ones. Though they are usually very close, some hand-fitting may be needed in some pathological cases.

Inclusion of X-splines by:
Carole Blanc (blanc@labri.u-bordeaux.fr)
Christophe Schlick (schlick@labri.u-bordeaux.fr)
Note: the initial implementation was done by C. Feuille, S. Grosbois, L. Maziere and L. Minihot as a student practice (Universite Bordeaux, France).

Open/close compound feature written by
Bill Taylor (bill@mainstream.com)

Library feature written by
Stephane Mancini (mancini@elecsrv.enst.fr) (object preview by Brian V. Smith)

The library objects in the Electrical and Logic libraries were done by
Peter Hiscocks (phiscock@ee.ryerson.ca)

The library objects in the Computer, Networks, and Hospital-Equipment libraries were extracted from the clipart example files by
Bill Chimiak (chim@bgsm.edu)

Version 3.2.3:

Please see the CHANGES file for credits for version 3.2.3 features.

NOTES
Many bug fixes/cleanups etc. by a host of faithful users

See the CHANGES file for all the credits

The TransFig package was written by Micah Beck and is maintained by Brian Smith