1XDVI(1)                     General Commands Manual                    XDVI(1)
2
3
4

NAME

6       xdvi - DVI Previewer for the X Window System
7

SYNOPSIS

9       xdvi  [+[page]] [--help] [-allowshell] [-altfont font] [-anchorposition
10       anchor] [-bg color] [-browser WWWbrowser] [-copy] [-cr  color]  [-debug
11       bitmask|string[,string ...]]  [-display host:display] [-dvipspath path]
12       [-editor command] [-expert] [-expertmode flag] [-fg color] [-findstring
13       string]  [-font  font]  [-fullscreen  ] [-gamma g] [-geometry geometry]
14       [-gsalpha]  [-gspalette  palette]  [-h]  [-help]  [-hl  color]  [-hush]
15       [-hushbell]  [-hushchars] [-hushchecksums] [-hushstdout] [-icongeometry
16       geometry]  [-iconic]  [-install]  [-interpreter  path]   [-keep]   [-l]
17       [-license]  [-linkcolor  color]  [-linkstyle  0|1|2|3] [-margins dimen]
18       [-mfmode mode-def[:dpi]] [-mgs[n] size] [-mousemode  0|1|2]  [-nocolor]
19       [-nofork]    [-noghostscript]   [-nogrey]   [-nogssafer]   [-noinstall]
20       [-nomakepk]  [-nomatchinverted]  [-noomega]   [-noscan]   [-notempfile]
21       [-notype1fonts]   [-offsets   dimen]  [-p  pixels]  [-paper  papertype]
22       [-pause] [-pausespecial special-string] [-postscript flag]  [-rulecolor
23       color]  [-rv]  [-S  density]  [-s  shrink] [-safer] [-sidemargin dimen]
24       [-sourceposition line[:col][ ]filename]  [-statusline]  [-text-encoding
25       encoding]   [-thorough]   [-topmargin   dimen]   [-unique]   [-version]
26       [-visitedlinkcolor color] [-warnspecials] [-watchfile secs] [-wheelunit
27       pixels] [-xoffset dimen] [-yoffset dimen] [dvi_file]
28

DESCRIPTION

30       Xdvi  is  a  program  for previewing dvi files, as produced e.g. by the
31       tex(1) program, under the X window system.
32
33       Xdvi can show the file shrunken by various integer factors, and it  has
34       a  ``magnifying glass'' for viewing parts of the page enlarged (see the
35       section MAGNIFIER below). This version of xdvi is also referred  to  as
36       xdvik  since  it  uses the kpathsea library to locate and generate font
37       files.  In addition to that, it supports the following features:
38
39         - hyperlinks in DVI files (section HYPERLINKS),
40
41         - direct rendering of PostScript<tm> Type 1  fonts  (section  TYPE  1
42           FONTS),
43
44         - source specials in the DVI file (section SOURCE SPECIALS),
45
46         - string search in DVI files (section STRING SEARCH),
47
48         - saving  or  printing (parts of) the DVI file (sections PRINT DIALOG
49           and SAVE DIALOG).
50
51       Xdvi can be compiled with the Motif toolkit or the Xaw (Athena) toolkit
52       (and  variants  of  it), and the Motif version has a slightly different
53       GUI; these differences are noted below.
54
55       Before displaying a page of a DVI file, xdvi will check to see  if  the
56       file  has changed since the last time it was displayed.  If this is the
57       case, it will reload the file.  This feature allows you to preview many
58       versions of the same file while running xdvi only once. Since it cannot
59       read partial DVI files, xdvik versions starting from 22.74.3 will  cre‐
60       ate  a  temporary copy of the DVI file being viewed, to ensure that the
61       file can be viewed without interruptions. (The -notempfile can be  used
62       to turn off this feature).
63
64       Xdvi can show PostScript<tm> specials by any of three methods.  It will
65       try first to use Display PostScript<tm>, then NeWS, then it will try to
66       use  Ghostscript  to render the images.  All of these options depend on
67       additional software to work properly; moreover, some of them may not be
68       compiled into this copy of xdvi.
69
70       For  performance  reasons,  xdvi does not render PostScript specials in
71       the magnifying glass.
72
73       If no file name has been specified on the command line, xdvi  will  try
74       to  open the most recently opened file; if the file history (accessible
75       via the File > Open Recent menu) is empty, or if none of the  files  in
76       the  history  are  valid  DVI files, it will pop up a file selector for
77       choosing a file name.  (In previous versions, which didn't have a  file
78       history,  the file selector was always used; you can set the X resource
79       noFileArgUseHistory to false to get back the old behaviour.)
80

OPTIONS

82       In addition to specifying the dvi file (with or without the .dvi exten‐
83       sion), xdvi supports the following command line options.  If the option
84       begins with a `+' instead of a `-', the option is restored to  its  de‐
85       fault  value.   By  default,  these options can be set via the resource
86       names given in parentheses in the description of each option.
87
88       +page  Specifies the first page to show.  If + is given without a  num‐
89              ber, the last page is assumed; the first page is the default.
90
91       -allowshell
92              (.allowShell) This option enables the shell escape in PostScript
93              specials.  (For security reasons, shell escapes are disabled  by
94              default.)   This  option should be rarely used; in particular it
95              should not be used just to uncompress files:  that  function  is
96              done  automatically  if  the file name ends in .Z, .gz, or .bz2.
97              Shell escapes are always turned off  if  the  -safer  option  is
98              used.
99
100       -altfont font
101              (.altFont)  Declares  a default font to use when the font in the
102              dvi file cannot be found.  This is  useful,  for  example,  with
103              PostScript <tm> fonts.
104
105       -anchorposition anchor
106              Jump  to  anchor after opening the DVI file. This is only useful
107              when invoking xdvi from other applications.
108
109       -background color
110              (.background) Determines the color of the background.   Same  as
111              -bg.
112
113       -bg color
114              (.background) Determines the color of the background.
115
116       -browser browser
117              (.wwwBrowser) Defines the web browser used for handling external
118              URLs. The value of this option or resource has the  same  syntax
119              as the BROWSER environment variable; see the explanation of that
120              variable in the section `ENVIRONMENT' below for a  detailed  de‐
121              scription.   If neither the option nor the X resource wwwBrowser
122              is specified, the environment variables BROWSER  and  WWWBROWSER
123              (in  that  order)  are used to determine the browser command. If
124              these are not set either, the following default value  is  used:
125              xdg-open %s:htmlview %s:firefox -remote -remote "openURL(%s,new-
126              window)":mozilla    -remote    "openURL(%s,new-window)":netscape
127              -raise -remote "openURL(%s,new-window)":xterm -e w3m %s:xterm -e
128              lynx %s:xterm -e wget %s
129
130       -copy  (.copy) Always use the copy operation when writing characters to
131              the display.  This option may be necessary for correct operation
132              on a color display, but overstrike characters will be incorrect.
133              If  greyscale  anti-aliasing is in use, the -copy operation will
134              disable the use of colorplanes and make overstrikes come out in‐
135              correctly.  See also -thorough.
136
137       -cr color
138              (.cursorColor)  Determines  the  color of the mouse cursor.  The
139              default is the same as the foreground color.
140
141       -debug bitmask|string[,string ...]
142              (.debugLevel) If nonzero, prints additional information on stan‐
143              dard  output.  The argument can be either a bitmask specified as
144              a decimal number, or comma-separated list of strings.
145              For the bitmask representation, multiple values can be specified
146              by  adding  the numbers that represent the individual bits; e.g.
147              to debug all file searching and opening commands,  use  4032  (=
148              2048 + 1024 + 512 + 256 + 128 + 64). Use -1 to turn on debugging
149              of everything (this will produce huge output).
150              For the string representation, use the  strings  listed  in  the
151              following  table,  with  a comma to separate the values; e.g. to
152              debug all file searching and opening  commands,  use  search,ex‐
153              pand,paths,hash,stat,open.   (The  option `kpathsea' is provided
154              as a shorthand for these.)  Note that such a list may need to be
155              quoted  to  prevent the shell from interpreting commas or spaces
156              in the list.
157              The individual numbers and strings have the following meanings:
158
159               1       bitmap      Bitmap creation
160               2       dvi         DVI translation
161               4       pk          PK fonts
162               8       batch       Batch mode: Exit after
163                                   reading the DVI file
164               16      event       Event handling
165               32      ps          PostScript interpreter calls
166               64      stat        Kpathsea stat(2) calls
167               128     hash        Kpathsea hash table lookups
168               256     open        Kpathsea file opening
169               512     paths       Kpathsea path definitions
170               1024    expand      Kpathsea path expansion
171               2048    search      Kpathsea searching
172               4032    kpathsea    All Kpathsea options
173               4096    htex        Hypertex specials
174               8192    src         Source specials
175               16384   client      Client/server mode (see -unique
176                                   and -sourceposition options)
177               32768   ft          FreeType library messages (Type 1 fonts)
178               65536   ft_verbose  Verbose FreeType library messages (currently unused)
179               131072  gui         GUI elements
180               262144  find        Searching for strings in the DVI file
181               524288  files       File history and opening DVI files
182
183              Some of the Kpathsea debugging options are actually provided  by
184              Kpathsea;  see  the Debugging section in the Kpathsea manual for
185              more information on these.
186
187       -density density
188              (.densityPercent) Determines the  density  used  when  shrinking
189              bitmaps for fonts.  A higher value produces a lighter font.  The
190              default value is 40.  If greyscaling is in  use,  this  argument
191              does not apply; use -gamma instead.  See also the `S' keystroke.
192              Same as -S.
193
194       -display host:display
195              Specifies the host and screen to be used for displaying the  dvi
196              file.  By default this is obtained from the environment variable
197              DISPLAY.
198
199       -dvipspath path
200              (.dvipsPath) Use path as the dvips program to use when printing.
201              The  default  for  this  is dvips.  The program or script should
202              read the DVI file from standard input, and write the  PostScript
203              file to standard output.
204
205       -editor editor
206              (.editor)  Specifies  the  editor  that will be invoked when the
207              source-special() action is triggered to start a  reverse  search
208              (by default via Ctrl-Mouse 1).  The argument to this option is a
209              format string in which occurrences of ``%f'' are replaced by the
210              file name, occurrences of ``%l'' are replaced by the line number
211              within the file, and optional occurrences of ``%c'' are replaced
212              by the column number within the line.
213
214              If  neither  the option nor the X resource .editor is specified,
215              the following environment variables are checked to determine the
216              editor  command: XEDITOR, VISUAL, and EDITOR (in this sequence).
217              If the string is found as the value of the VISUAL or EDITOR  en‐
218              vironment  variables,  then  ``xterm  -e  '' is prepended to the
219              string; if the editor is specified by other means, then it  must
220              be  in the form of a shell command to pop up an X window with an
221              editor in it. If none of these variables is set, a warning  mes‐
222              sage  is  displayed  and  the  command ``xterm -e vi +%l %f'' is
223              used.
224
225              If no ``%f'' or ``%l'' occurs in the string, the missing  format
226              strings  are appended automatically.  (This is for compatibility
227              with other programs when using  one  of  the  environment  vari‐
228              ables).
229
230              A  new  instance of the editor is started each time this command
231              is used; therefore it is preferable to use an editor that can be
232              invoked  in  `client'  mode  to load new files into the same in‐
233              stance. Example settings are:
234
235              emacsclient --no-wait
236                     (older Emacsen)
237
238              gnuclient -q
239                     (XEmacs and newer Emacsen)
240
241              gvim --servername xdvi --remote
242                     (VIM v6.0+; the `--servername  xdvi'  option  will  cause
243                     gvim  to run a dedicated instance for the files opened by
244                     xdvi.)
245
246              nc     (nedit)
247
248              Note that those strings need to be enclosed into quotes when us‐
249              ing  them  on  the  command-line to protect them from the shell;
250              when using them as argument for the .editor resource in an X re‐
251              source file, no quotes should be used.
252
253              NOTE  ON SECURITY: The argument of this option isn't executed as
254              a shell command, but via exec() to prevent evil tricks with  the
255              contents of source specials.
256
257       -expert
258              This option is only supported for backwards compatibility; it is
259              equivalent to -expertmode 0, which should be preferred.
260
261       -expertmode flag
262              (.expertMode) With an argument of 0, this  option  switches  off
263              the  display  of the buttons, scrollbars, the toolbar (Motif on‐
264              ly), the statusline and the page list. These  GUI  elements  can
265              also  be  (de)activated separately, by combining the appropriate
266              values in the flag argument. This acts similar to the -debug op‐
267              tion:  The  integer  flag  is treated as a bitmap where each bit
268              represents one element. If the bit has the value 1, the  element
269              is  switched  on, if it has the value 0, the element is switched
270              off. The meaning of the bits is as follows:
271
272               1       statusline
273               2       scrollbars
274               4       Motif: pagelist, Xaw: buttons and pagelist
275               8       toolbar (Motif only)
276               16      menubar (Motif only)
277
278              For example, to turn on only the statusline and the  scrollbars,
279              use 3 (= 1 + 2).  See also the `x' keystroke, where the bits are
280              addressed by their positions, from 1 to 3 (Xaw)  or  5  (Motif),
281              respectively.
282
283       If  the  statusline  is not active, all messages that would normally be
284       printed to the statusline will be printed to stdout, unless the  -hush‐
285       stdout option is used.
286
287       -fg color
288              (.foreground) Determines the color of the text (foreground).
289
290       -findstring string
291              This  option  triggers  a search for string in the DVI file men‐
292              tioned on the command-line, similar to forward search  (see  the
293              description  of  the sourceposition option): If there is already
294              another instance of xdvi running  on  the  displaying  that  DVI
295              file, it will cause that instance to perform the search instead.
296              The search starts at the top of the  current  page  of  the  DVI
297              file.
298
299       -font font
300              (*font)  Sets the font used in menus, buttons etc., as described
301              in the X(7x) man page. The font for child  windows  can  be  set
302              separately, e.g.:
303
304              xdvi*statusline*font: \
305                 -*-helvetica-medium-r-*-*-12-*-*-*-*-*-*-*
306
307
308       -foreground color
309              Same as -fg.
310
311       -fullscreen
312              When  this  option is used, xdvi will (try to) run in fullscreen
313              mode, with no window decorations.  This option is not guaranteed
314              to work with all windowmanagers/desktops; if you're experiencing
315              problems with it, please use the -geometry option instead, and a
316              suitable  window  manager  setting  to remove the window decora‐
317              tions.  When using this option for presentations, you might want
318              to  get  rid  of all the control widgets as well, using the -ex‐
319              pertmode option. This option can also be toggled at runtime  us‐
320              ing the fullscreen action (by default bound to Ctrl-l).
321
322       -gamma gamma
323              (.gamma)  Controls  the interpolation of colors in the greyscale
324              anti-aliasing color palette.  Default value is  1.0.   For  0  <
325              gamma < 1, the fonts will be lighter (more like the background),
326              and for gamma > 1, the fonts will be darker (more like the fore‐
327              ground).  Negative values behave the same way, but use a slight‐
328              ly different algorithm.  For color and grayscale  displays;  for
329              monochrome, see -density.  See also the `S' keystroke.
330
331       -geometry geometry
332              (.geometry)  Specifies  the initial geometry of the main window,
333              as described in the X(7x) man page. The geometry of  child  win‐
334              dows can be set separately, e.g.:
335              xdvi*helpwindow.geometry: 600x800
336
337       -gsalpha
338              (.gsAlpha)  Causes  Ghostscript  to  be called with the x11alpha
339              driver instead of the x11 driver.  The x11alpha  driver  enables
340              anti-aliasing  in  PostScript  specials, for a nicer appearance.
341              It is available on newer versions of Ghostscript.   This  option
342              can also be toggled with the `V' keystroke.
343
344       -gspalette palette
345              (.palette)  Specifies  the  palette to be used when using Ghost‐
346              script for rendering PostScript specials.  Possible  values  are
347              Color, Greyscale, and Monochrome.  The default is Color.
348
349       -h, -help, --help
350              Prints  a  short  help text with an overview of the command-line
351              options to standard output.
352
353       -hl color
354              (.highlight) Determines the color of the  page  border,  of  the
355              ruler  in  `ruler mode', and of the highlighting markers in for‐
356              ward search and string search.  The default  is  the  foreground
357              color.
358
359       -hush  (.Hush) Causes xdvi to suppress all suppressible warnings.
360
361       -hushbell
362              (.hushBell) Don't sound the X bell when an error occurs.
363
364       -hushchars
365              (.hushLostChars)  Causes  xdvi to suppress warnings about refer‐
366              ences to characters which are not defined in the font.
367
368       -hushchecksums
369              (.hushChecksums) Causes xdvi to suppress warnings about checksum
370              mismatches between the dvi file and the font file.
371
372       -hushstdout
373              (.hushStdout)  Suppresses printing of status messages to stdout.
374              Note that errors or warnings will still  be  printed  to  stderr
375              even if this option is used.
376
377       -icongeometry geometry
378              (.iconGeometry) Specifies the initial position for the icon.
379
380       -iconic
381              (.iconic)  Causes  the xdvi window to start in the iconic state.
382              The default is to start with the window open.
383
384       -install
385              (.install) If xdvi is running under a PseudoColor  visual,  then
386              (by  default) it will check for TrueColor visuals with more bits
387              per pixel, and switch to such a visual if  one  exists.   If  no
388              such visual exists, it will use the current visual and colormap.
389              If -install is selected, however, it will still use a  TrueColor
390              visual  with a greater depth, if one is available; otherwise, it
391              will install its own colormap on the  current  visual.   If  the
392              current visual is not PseudoColor, then xdvi will not switch the
393              visual or colormap, regardless of its options.  The default val‐
394              ue  of  the install resource is the special value, maybe.  There
395              is no +install option.  See also -noinstall, and the GREYSCALING
396              AND COLORMAPS section.
397
398       -interpreter filename
399              (.interpreter)  Use filename as the Ghostscript interpreter.  By
400              default it uses gs.
401
402       -keep  (.keepPosition) Sets a flag to indicate  that  xdvi  should  not
403              move  to  the home position when moving to a new page.  See also
404              the `k' keystroke. This flag is honored by  all  page  switching
405              actions  and  by up-or-previous() / down-or-next(), although the
406              latter only honor the horizontal position, not the vertical one.
407              This allows for a "continuous" scrolling back an forth through a
408              document with a display window narrower than a page width.
409
410       -l     (.listFonts) List the names of all fonts used.
411
412       -license
413              Prints licensing information.
414
415       -linkcolor
416              (.linkColor) Color used for unvisited hyperlinks (`Blue2' by de‐
417              fault).  Hyperlinks  are  unvisited before you click on them, or
418              after the DVI file has been reloaded.  The value should  be  ei‐
419              ther a valid X color name (such as DarkGoldenrod4) or a hexadec‐
420              imal color string (such as #8b6508).  See also -visitedlinkcolor
421              and -linkstyle.
422
423       -linkstyle
424              (.LinkStyle)  Determines  the style in which hyperlinks are dis‐
425              played. Possible values and their meanings are:
426
427               0       No highlighting of links
428               1       Underline links with link color
429               2       No underlining, color text with link color
430               3       Underline and display text colored with
431                       link color
432
433              The values for link color are specified by the options/resources
434              -linkcolor and -visitedlinkcolor (which see).
435
436       -margins dimen
437              (.Margin)  Specifies  the  size  of both the top margin and side
438              margin.  This determines the ``home'' position of the page with‐
439              in  the  window as follows.  If the entire page fits in the win‐
440              dow, then the margin settings are ignored.  If, even  after  re‐
441              moving  the  margins  from the left, right, top, and bottom, the
442              page still cannot fit in the window, then the page is put in the
443              window  such  that the top and left margins are hidden, and pre‐
444              sumably the upper left-hand corner of the text on the page  will
445              be  in the upper left-hand corner of the window.  Otherwise, the
446              text is centered in the window.  The dimension should be a deci‐
447              mal number optionally followed by any of the two-letter abbrevi‐
448              ations for units accepted by TeX (pt, pc, in, bp,  cm,  mm,  dd,
449              cc, or sp).  By default, the unit will be cm (centimeters).  See
450              also -sidemargin, -topmargin, and the keystroke `M.'
451
452       -mfmode mode-def
453              (.mfMode) Specifies a mode-def string,  which  can  be  used  in
454              searching  for  fonts (see ENVIRONMENT, below).  Generally, when
455              changing the mode-def, it is also necessary to change  the  font
456              size  to  the  appropriate value for that mode.  This is done by
457              adding a colon and the value in dots per inch; for example, -mf‐
458              mode  ljfour:600.   This method overrides any value given by the
459              pixelsPerInch resource or the  -p  command-line  argument.   The
460              metafont  mode  is also passed to metafont during automatic cre‐
461              ation of fonts.  By default, it is unspecified.
462
463       -mgs size
464              Same as -mgs1.
465
466       -mgs[n] size
467              (.magnifierSize[n]) Specifies the size of the window to be  used
468              for the ``magnifying glass'' for Button n.  The size may be giv‐
469              en as an integer (indicating that the magnifying glass is to  be
470              square),  or  it may be given in the form widthxheight.  See the
471              MOUSE ACTIONS section.  Defaults are 200x150, 400x250,  700x500,
472              1000x800, and 1200x1200.
473
474       -mousemode [0|1|2]
475              (.mouseMode) Specifies the default mode of xdvi at startup: Mag‐
476              nifier (0), Text Selection Mode (1) or Ruler Mode (2).  See  the
477              section MODES, below, for more information.
478
479       -nocolor
480              (.color)  Turns  off the use of color specials.  This option can
481              be toggled with the `C' keystroke.  (Note: -nocolor  corresponds
482              to color:off; +nocolor to color:on.)
483
484       -nofork
485              (.fork)  With  the  -sourceposition and -unique options, the de‐
486              fault behavior is for xdvi to put  itself  into  the  background
487              (like  a daemon) if there is no appropriate instance of xdvi al‐
488              ready running.  This argument makes it run in the foreground in‐
489              stead.  This is useful for debugging, or if your client applica‐
490              tion cannot deal well with a program  self-backgrounding  itself
491              in this way -- e.g. the IPC functions in emacs are known to have
492              problems with this.  If no -sourceposition or  -unique  argument
493              is given, then this option has no effect.  (Note: -nofork corre‐
494              sponds to fork:off; +nofork to fork:on.)
495
496       -noghostscript
497              (.ghostscript) Inhibits the use of  Ghostscript  for  displaying
498              PostScript<tm>  specials.   (Note: -noghostscript corresponds to
499              ghostscript:off; +noghostscript to ghostscript:on.)
500
501       -nogrey
502              (.grey) Turns off the use of greyscale anti-aliasing when print‐
503              ing  shrunken  bitmaps.  (Note: -nogrey corresponds to grey:off;
504              +nogrey to grey:on.)  See also the `G' keystroke.
505
506       -nogssafer
507              (.gsSafer) Normally, if Ghostscript is used to render PostScript
508              specials,  the  Ghostscript  interpreter  is run with the option
509              -dSAFER.   The  -nogssafer  option  runs   Ghostscript   without
510              -dSAFER.   The -dSAFER option in Ghostscript disables PostScript
511              operators such as  deletefile,  to  prevent  possibly  malicious
512              PostScript  programs  from having any effect.  If the -safer op‐
513              tion is specified, then this option has no effect; in that  case
514              Ghostscript  is always run with -dSAFER.  (Note: -nogssafer cor‐
515              responds to gsSafer:off; +nogssafer to gsSafer:on.)
516
517       -noinstall
518              (.install) Inhibit the default behavior of switching to a  True‐
519              Color  visual  if one is available with more bits per pixel than
520              the current visual.  (Note: -noinstall corresponds  install:off;
521              there  is  no  +noinstall  option.)   See also -install, and the
522              GREYSCALING AND COLORMAPS section.
523
524       -nomakepk
525              (.makePk) Turns off automatic generation of font files that can‐
526              not  be  found  by other means.  (Note: -nomakepk corresponds to
527              makePk:off; +nomakepk to makePK:on.)
528
529       -nomatchinverted
530              (.matchInverted) Don't highlight string search  matches  in  in‐
531              verted  color; instead, draw a rectangle in highlight color (see
532              the -hl option) around the match. This option is activated auto‐
533              matically  if  the  display  isn't running in TrueColor.  (Note:
534              -nomatchinverted corresponds to  matchInverted:off;  +nomatchin‐
535              verted to matchInverted:on.)
536
537       -noomega
538              (.omega)  This will disable the use of Omega extensions when in‐
539              terpreting DVI files.  By default, the  additional  opcodes  129
540              and  134  are  recognized by xdvi as Omega extensions and inter‐
541              preted as requests to set 2-byte characters. The  only  drawback
542              is  that the virtual font array will require 65536 positions in‐
543              stead of the default 256 positions, i.e. the memory requirements
544              of  xdvi  will be slightly larger. If you find this unacceptable
545              or encounter another problem with the Omega extensions, you  can
546              switch  this extension off by using -noomega (but please do send
547              a bug report if you find such problems - see the bug address  in
548              the AUTHORS section below).
549              (Note:  -noomega  corresponds  to omega: off; +noomega to omega:
550              on.)
551
552       -noscan
553              (.prescan) By default, xdvi does a preliminary scan of  the  dvi
554              file  to  process any papersize specials; this is especially im‐
555              portant at startup since the paper size may be needed to  deter‐
556              mine  the  window size.  If PostScript<tm> is in use, then pres‐
557              canning is also necessary in order to  properly  process  header
558              files.   In  addition, prescanning is needed to correctly deter‐
559              mine the background color of a page.  This option turns off such
560              prescanning.   (Prescanning will be automatically be turned back
561              on if xdvi detects any of the specials mentioned above.)  (Note:
562              -noscan corresponds to prescan:off; +noscan to prescan:on.)
563
564       -notempfile
565              (.tempFile)  As mentioned in the section DESCRIPTION above, xdvi
566              will create a temporary copy of the DVI file so that it  can  be
567              accessed  without  interruptions  even  while  the file is being
568              rewritten by TeX.  Since this introduces the overhead of copying
569              the  file  every time it has changed, the -notempfile allows you
570              to turn off this behaviour. In this case, exposing parts of  the
571              window while the DVI file is being written by TeX will erase the
572              current window contents until the DVI  file  can  be  completely
573              reread.
574              (Note:  -notempfile  corresponds to tempFile:off; +notempfile to
575              tempFile:on.)
576
577       -notype1fonts
578              (.type1) This will disable the use of the  FreeType  library  to
579              display PostScript<tm> Type 1 fonts.  Use this option as a work‐
580              around when you encounter problems with the display  of  Type  1
581              fonts  (but  please  don't  forget  to send a bug report in this
582              case, to the URL mentioned in the section AUTHORS below).
583              (Note: -notype1fonts corresponds to type1:off; +notype1fonts  to
584              type1:on.)
585
586       -offsets dimen
587              (.Offset) Specifies the size of both the horizontal and vertical
588              offsets of the output on the page.  By decree  of  the  Stanford
589              TeX  Project,  the default TeX page origin is always 1 inch over
590              and down from the top-left page corner, even  when  non-American
591              paper  sizes  are  used.  Therefore, the default offsets are 1.0
592              inch.  The argument dimen should be a decimal number  optionally
593              followed  by  any  of the two-letter abbreviations for units ac‐
594              cepted by TeX (pt, pc, in, bp, cm, mm, dd, cc, or sp).   By  de‐
595              fault, the unit will be cm (centimeters).  See also -xoffset and
596              -yoffset.
597
598       -p pixels
599              (.pixelsPerInch) Defines the size of the fonts to use, in pixels
600              per  inch.   The  default value is 600.  This option is provided
601              only for backwards compatibility; the preferred  way is  to  set
602              both the resolution and the Metafont mode via the -mfmode option
603              (which see).
604
605       -paper papertype
606              (.paper) Specifies the size of the printed page.  Note  that  in
607              most  cases it's best to specify the paper size in the TeX input
608              file via the line
609
610              \usepackage[dvips]{geometry}
611
612              which will be recognized by both dvips and xdvi;  in  that  case
613              the use of a `-paper' option should be unnecessary.
614              The paper size may be specified in the form widthxheight option‐
615              ally followed by a unit, where width and height are decimal num‐
616              bers giving the width and height of the paper, respectively, and
617              the unit is any of the two-letter abbreviations  for  units  ac‐
618              cepted  by  TeX (pt, pc, in, bp, cm, mm, dd, cc, or sp).  By de‐
619              fault, the unit is cm (centimeters).
620              There are also synonyms which may be used: us (8.5x11in),  legal
621              (8.5x14in),  foolscap  (13.5x17in),  as  well  as  the ISO sizes
622              a1-a7, b1-b7, c1-c7.  Each of these also has a landscape or `ro‐
623              tated'  variant: usr (11x8.5in), a1r-a7r, etc. For compatibility
624              with dvips, the formats letter (8.5x11in), ledger (17x11in)  and
625              tabloid  (11x17in)  are also supported (these don't have rotated
626              variants).
627              Any of the above sizes may be preceded by  a  plus  sign  (`+');
628              this causes the paper size given here to override any paper size
629              given in the dvi file.  The default paper size is 21 x  29.7  cm
630              (A4 size).
631
632       -pause (.pause)  This option provides a simple implementation of incre‐
633              mental (stepwise) display, which can be used for  presentations.
634              When  this  option  is  used, xdvi will pause the display of the
635              current page whenever it  encounters  a  special  special-string
636              (xdvi:pause  by default; the string can be customized via -paus‐
637              especial, see below), and the cursor will change its shape.  The
638              action  unpause-or-next()  (by  default  bound to the Space key)
639              will display the next portion of the page up  to  the  following
640              special-string,  or  until the end of the page is reached.  When
641              the option is not used, specials containing special-string  will
642              be ignored.
643
644       -pausespecial special-string
645              (.pauseSpecial)  Sets  the  special  string  that causes xdvi to
646              pause when the -pause option is active.  The  default  value  of
647              special-string is xdvi:pause.
648
649       -postscript flag
650              (.postscript)  If flag = 0, rendering of PostScript<tm> specials
651              is disabled; instead,  bounding  boxes  will  be  displayed  (if
652              available).  A  value of 1 (the default) switches PostScript<tm>
653              specials on. With a value of 2, the PostScript<tm> specials  are
654              displayed  along  with  their bounding boxes; this allows you to
655              visually check the correctness of the bounding boxes. The values
656              can  also  be  toggled at runtime with the `v' keystroke and the
657              corresponding numerical prefix arguments 0, 1 and 2.
658
659       -ps2pdfpath path
660              (.ps2pdfPath) Use path as a conversion program  from  PostScript
661              to PDF. The program or script should accept two command-line ar‐
662              guments: The PostScript file as first argument, and the PDF out‐
663              put file as second argument.
664
665       -rulecolor color
666              (.ruleColor) Determines the color of the rules used for the mag‐
667              nifier (default: foreground color).
668
669       -q     (.noInitFile) Ignore the $HOME/.xdvirc startup file (i.e.  don't
670              read it at startup, and don't write it at exit). This forces the
671              defaults defined in $HOME/.Xdefaults to be used. See  FILES  for
672              more information on $HOME/.xdvirc.
673
674       -rv    (.reverseVideo) Causes the page to be displayed with white char‐
675              acters on a black background, instead of vice versa.
676
677       -S density
678              (.densityPercent) Same as -density (which see).
679
680       -s shrink
681              (.shrinkFactor) Defines the initial shrink factor.  The  default
682              value  is  8.   If shrink is given as 0, then the initial shrink
683              factor is computed so that the page fits within the  window  (as
684              if the `s' keystroke were given without a number).
685
686       -safer (.safer) This option turns on all available security options; it
687              is designed for use when xdvi is called by a  browser  that  ob‐
688              tains  a dvi or TeX file from another site.  This option selects
689              +nogssafer and +allowshell.
690
691       -sidemargin dimen
692              (.sideMargin) Specifies the side margin (see -margins).
693
694       -sourceposition line[:col][ ]filename
695              This option makes xdvi search in the dvi file for the place cor‐
696              responding  to  the  indicated line (and, optionally, column) in
697              the .tex source file, and highlight the place found by drawing a
698              rectangle in the highlight color (see the -hl option) around the
699              corresponding text.  In addition, when run  with  this  argument
700              (and  the -nofork option is not given, which see), xdvi will al‐
701              ways return immediately:  if it finds another instance  of  xdvi
702              already  showing  dvi_file,  then it will cause that instance to
703              raise its window and move to the given place in  the  dvi  file;
704              otherwise  it  will start up its own instance in the background.
705              If several instances of xdvi are displaying the  respective  dvi
706              file,  the instance which was last raised to the foreground will
707              be used.
708
709              The space before filename is only needed if the filename  starts
710              with  a digit.  When the space is used, the argument needs to be
711              enclosed in quotes to prevent the shell from misinterpreting the
712              space as argument separator.
713
714              This  option requires that dvi_file be prepared with source spe‐
715              cial information.  See the section on SOURCE  SPECIALS  for  de‐
716              tails on how to do this.
717
718              Here  is  a more detailed description of how the filename in the
719              -sourceposition argument is matched with  the  filename  in  the
720              source specials:
721
722              1. If  neither  of the filenames contains a path name component,
723                 the filenames are compared ignoring the `.tex' extensions  in
724                 both filenames.
725
726              2. Otherwise, if one of the filenames does contain a path compo‐
727                 nent (e.g.: ./test.tex, ../test.tex, /my/homedir/tex/test.tex
728                 or  any combination of these), both filenames are expanded to
729                 a full path, with any occurrences of ../ and ./ expanded, and
730                 multiple slashes removed.
731                 The  pathname  in the -sourceposition is expanded relative to
732                 the current working directory of the xdvi -sourceposition in‐
733                 vocation,  and  the  pathnames in the source specials are ex‐
734                 panded relative to the path of the  current  DVI  file  being
735                 viewed.
736                 The  path  names are then compared ignoring the `.tex' exten‐
737                 sions in both path names.
738
739       -statusline
740              (.statusline) This option is obsolete; use -expertmode  flag in‐
741              stead (which see).
742
743       -text-encoding encoding
744              (.textEncoding)  Use encoding as the text encoding of the string
745              in the "Find" window. Usually, this should not be  needed  since
746              the encoding is determined from the locale settings.
747
748       -thorough
749              (.thorough)  Xdvi  will  usually  try  to ensure that overstrike
750              characters (e.g. \notin) are printed correctly.   On  monochrome
751              displays,  this  is  always possible with one logical operation,
752              either and or or.  On color displays, however, this may take two
753              operations,  one  to  set  the appropriate bits and one to clear
754              other bits.  If this is the case, then by default xdvi will  in‐
755              stead use the copy operation, which does not handle overstriking
756              correctly.  The -thorough option chooses  the  slower  but  more
757              correct choice.  See also -copy.
758
759       -topmargin dimen
760              (.topMargin)  Specifies  the  top  and bottom margins (see -mar‐
761              gins).
762
763       -unique
764              (.unique) This option will make another instance of xdvi running
765              on the same display act as a `server'.  For example, the invoca‐
766              tion
767
768              xdvi -unique +5 file.dvi
769
770              will cause this other instance to load file.dvi  on  page  5  in
771              place  of  the file that it is currently displaying. If there is
772              already another instance of xdvi  already  displaying  the  file
773              file.dvi,  then  it  will just jump to page 5.  If the other in‐
774              stance of xdvi is displaying a  different  file,  it  will  load
775              file.dvi  instead.  Otherwise,  if  no other instance of xdvi is
776              currently running on the display, this option instead  starts  a
777              new  instance  of xdvi in the background (unless the -nofork op‐
778              tion is specified, which see) displaying page 5 of file.dvi.
779              The filename and the +n option for the page number are the  only
780              options available for controlling a remote instance of xdvi like
781              this; all other options are currently ignored.
782
783       -useTeXpages
784              Use logical TeX pages (the values of the \count0  register)  in‐
785              stead of physical pages for the pagelist labels and when jumping
786              to a page in a document with the `g'  keystroke  (or  the  goto-
787              page()  action).   This  option  can be toggled via the `T' key‐
788              stroke.
789
790       -version
791              Print information on the version of xdvi.
792
793       -visitedlinkcolor
794              (.visitedLinkColor) Color used for visited hyperlinks (`Purple4'
795              by  default).  Hyperlinks become visited once you click on them.
796              As for linkColor, the value should be either  a  valid  X  color
797              name or a hexadecimal color string.
798
799       -warnspecials
800              (.warnSpecials)  Causes  xdvi  to  print warnings about \special
801              strings that it cannot process to  stderr.  These  warnings  are
802              suppressed by default.
803
804       -watchfile n
805              (.watchFile) If this option is set to a value larger than 0, xd‐
806              vi will check the DVI file for changes every n seconds.  If  the
807              DVI file has been completely written by TeX, it will be reloaded
808              automatically.  Fractional values (e.g. `2.5') are possible. The
809              default for this option is 0, i.e. no watching.
810              Since  xdvi  cannot  handle  partial  DVI files, it tries not to
811              reload the file while it is being rewritten.   However,  use  of
812              the magnifier or switching of pages requires reading (a part of)
813              the DVI file, and if the tempfile option is switched  off,  this
814              will erase the current contents of the window until the DVI file
815              can be read entirely.
816
817       -wheelunit pixels
818              (.wheelUnit) Sets the number of pixels that a motion of a  wheel
819              mouse  will  move  the  image up, down, left, or right. (See the
820              wheel and hwheel actions, below, for more information on  this.)
821              If  set  to zero, the wheel mouse functionality is (essentially)
822              disabled.  The default value is 80.
823
824       -xoffset dimen
825              (.xOffset) Specifies the size of the horizontal  offset  of  the
826              output on the page.  See -offsets.
827
828       -yoffset dimen
829              (.yOffset) Specifies the size of the vertical offset of the out‐
830              put on the page.  See -offsets.
831

KEYSTROKES

833       Xdvi recognizes the following keystrokes  when  typed  in  its  window.
834       Each  may  optionally be preceded by a (positive or negative) number, a
835       `prefix argument', whose interpretation will depend on  the  particular
836       keystroke.  This prefix argument can be discarded by pressing the ``Es‐
837       cape'' key.  If present, the ``Help'', ``Prior'' and ``Next'' keys  are
838       synonyms for `?', `b', and `f' keys, respectively.
839
840       The  key  bindings  listed here are those that xdvi assigns by default.
841       The names appearing in brackets at the beginning  of  the  descriptions
842       are  the  names  of  the actions associated with the keys; these can be
843       used to customize the key bindings, as explained in more detail in  the
844       section  CUSTOMIZATION  below.  If  only a lowercase binding is listed,
845       both upper- and lowercase keys will work for that binding.
846
847       ESC key
848              [discard-number()] The escape key discards the numerical  prefix
849              for all actions (useful when you mistyped a number).
850
851       Return key
852              [forward-page()] Moves to the next page (or to the nth next page
853              if a number is given).  Synonyms are `n', `f' and Line Feed.
854
855       Backspace key
856              [back-page()] Moves to the previous  page  (or  back  n  pages).
857              Synonyms are `p', `b' and Ctrl-h.
858
859       Delete key
860              [up-or-previous()]  Moves  up two-thirds of a window-full, or to
861              the top of the previous page if already at the top of the  page.
862              With  a float argument, moves up the corresponding fraction of a
863              window-full.
864
865       Space key
866              [unpause-or-next()] Moves down two-thirds of a  window-full,  or
867              to the next page if already at the bottom of the page.
868              When the option -pause special-string is used and the display is
869              currently paused, this key will instead display the next portion
870              of the page until the next special-string or the end of the page
871              is encountered.  See the description of the  -pause  option  for
872              details.  The  action [down-or-next()] does a similar thing, but
873              without pausing; it is not bound to a key by default.
874
875       Ctrl-Home (Xaw), Ctrl-osfBeginLine (Motif)
876              [goto-page(1)] Moves to the first page of the document.
877
878       Ctrl-End (Xaw), Ctrl-osfEndLine (Motif)
879              [goto-page()] Moves to the last page of the document.
880
881       Home (Xaw), osfBeginLine (Motif)
882              [home-or-top()] Move to the ``home'' position of the page, or to
883              the  top  of the page if the keep flag is set (in this case, the
884              page doesn't scroll horizontally).
885
886       End (Xaw), osfEndLine (Motif)
887              [end-or-bottom()] Move to the ``end'' position of the page  (the
888              lower  right-hand  corner),  or to the bottom of the page if the
889              keep flag is set (in this case, the page doesn't scroll horizon‐
890              tally).
891
892       Down arrow
893              [down(0.015)] Scrolls page down.
894
895       Up arrow
896              [up(0.015)] Scrolls page up.
897
898       Right arrow
899              [right(0.015)] Scrolls page right.
900
901       Left arrow
902              [left(0.015)] Scrolls page left.
903
904       Alt-Ctrl-+
905              [change-density(25)]  Increase  the darkness of the fonts in the
906              DVI window by adding to the gamma value (see also the  `S'  key‐
907              stroke).
908
909       Alt-Ctrl--
910              [change-density(-25)]  Decrease the darkness of the fonts in the
911              DVI window by subtracting from the gamma value (see also the `S'
912              keystroke).
913
914       Ctrl-+ [set-shrink-factor(+)]  Increase the shrink factor (see also the
915              `s' keystroke).
916
917       Ctrl-- [set-shrink-factor(-)] Decrease the shrink factor (see also  the
918              `s' keystroke).
919
920       Ctr-[  [pagehistory-delete-backward()]  Delete  the current item in the
921              page history and move to the history  item  before  the  deleted
922              one.  With a prefix argument n, delete n previous history items.
923              See PAGE HISTORY for details.
924
925       [      [pagehistory-back()] Move back in the  page  history  (see  PAGE
926              HISTORY for details). With a prefix argument n, move back n his‐
927              tory items.
928
929       Ctr-]  [pagehistory-delete-forward()] Delete the current  item  in  the
930              page history and move to the history item after the deleted one.
931              With a prefix argument n, delete n next history items. See  PAGE
932              HISTORY for details.
933
934       ]      [pagehistory-forward()]  Move  forward  in the page history (see
935              PAGE HISTORY for details). With a prefix argument n,  move  for‐
936              ward n history items.
937
938       ^      [home()]  Move  to  the  ``home'' position of the page.  This is
939              normally the upper left-hand corner of the  page,  depending  on
940              the margins as described in the -margins option, above.
941
942       ?      [help()] Same as the h key (which see).
943
944       B      [htex-back()]  This key jumps back to the previous hyperlink an‐
945              chor. See the section HYPERLINKS for more information  on  navi‐
946              gating the links.
947
948       b      [back-page()]  Moves  to  the  previous  page (or back n pages).
949              Synonyms are `p', Ctrl-h and Backspace.
950
951       C      [set-color()] This key toggles the use of color  specials.   The
952              key  sequences  `0C'  and `1C' turn interpretation of color spe‐
953              cials off and on, respectively.  See also the -nocolor option.
954
955       c      [center()] Moves the page so that the  point  currently  beneath
956              the mouse cursor is moved to the middle of the window, and warps
957              the mouse cursor to the same place.
958
959       D      [toggle-grid-mode()] This key toggles the use of a grid  on  the
960              displayed  page.   If  no  number  is  given,  the  grid mode is
961              switched on or off.  By prepending a number from 1 to 3, 3  dif‐
962              ferent grid levels can be set.  The units of the grid are inches
963              or centimeters, depending on whether the paper format is  letter
964              (in) or a4 (cm).
965
966       d      [down()]  Moves  page  down  two thirds of a window-full. With a
967              float argument to ``down'', moves down the  corresponding  frac‐
968              tion of a window-full.
969
970       Ctrl-f [find()] Pop up a window to search for a string in the DVI file.
971              See the section STRING SEARCH, below, for more details.
972
973       f      [forward-page()] Moves to the next page (or to the nth next page
974              if a number is given).  Synonyms are `n', Return, and Line Feed.
975
976       G      [set-greyscaling()]  This key toggles the use of greyscale anti-
977              aliasing for displaying shrunken bitmaps.  In addition, the  key
978              sequences  `0G'  and `1G' clear and set this flag, respectively.
979              See also the -nogrey option.
980
981              If given a numeric argument that is not 0 or 1, greyscale  anti-
982              aliasing is turned on, and the gamma resource is set to the val‐
983              ue divided by 100. E.g. `150G' turns on greyscale and sets gamma
984              to 1.5.
985
986       Ctrl-g [find-next()]  Find  the next match string in the DVI file; this
987              can be used instead of pressing the `Find' button in the  search
988              window.
989
990       g      [goto-page()]  Moves  to  the  page with the given number. If no
991              page number is given, xdvi jumps to the last page.
992              If the option/resource useTeXpages is active, the numbers corre‐
993              spond to the actual page numbers in the TeX file; otherwise, ab‐
994              solute page numbers (starting from 1) are used.  In  the  latter
995              case,  the  page  numbers can be changed with the `P' keystroke,
996              below.  Note that with the useTeXpages  option  it  is  possible
997              that the same page number occurs multiple times; in such a case,
998              xdvi will use the first page number that matches.
999
1000       h      Pops up a help window with a short explanation of the  most  im‐
1001              portant key bindings and concepts.
1002
1003       k      [set-keep-flag()] Normally when xdvi switches pages, it moves to
1004              the home position as well.  The `k' keystroke toggles  a  `keep-
1005              position' flag which, when set, will keep the same position when
1006              moving between pages.  Also `0k' and `1k'  clear  and  set  this
1007              flag, respectively.  See also the -keep option.
1008
1009       Ctrl-l [fullscreen(toggle)]  Toggles  fullscreen mode (see the descrip‐
1010              tion of the -fullscreen option for more  information  on  this).
1011              This  is  even  more  flaky  than using the command-line option:
1012              There is no universal standard how a window could change its own
1013              geometry  or  window  decorations  at run-time, so this will not
1014              work with most window managers or desktops. Generally, it's bet‐
1015              ter  to  use  the  window manager controls to change the size or
1016              decorations of the xdvi window.
1017
1018       l      [left()] Moves page left two thirds of a window-full.
1019
1020       M      [set-margins()] Sets the margins so that the point currently un‐
1021              der  the  mouse cursor defines the upper left-hand corner of the
1022              text in the page.  Note that the command does not move  the  im‐
1023              age, but only determines the margins for the page switching com‐
1024              mands. For details on how the margins are used, see the -margins
1025              option.
1026
1027       m      [toggle-mark()]  Toggles  the  mark  for the current page in the
1028              page list. When a page is marked, it is displayed with  a  small
1029              star  `*' next to the page number.  The marked pages can then be
1030              printed or saved to a file.  A page or several pages can also be
1031              marked by clicking or dragging Mouse-2 in the page list.
1032
1033       Ctrl-n [toggle-mark()forward-page()]  Toggles  the mark for the current
1034              page in the page list, and moves to the next page. This lets you
1035              quickly mark a series of subsequent pages.
1036
1037       n      [forward-page()] Moves to the next page (or to the nth next page
1038              if a number is given).  Synonyms are `f', Return, and Line Feed.
1039
1040       Ctrl-o [select-dvi-file()] Read a new dvi file. A file-selection widget
1041              is  popped  up  for you to choose the DVI file from. If a prefix
1042              argument n is given, the n th file  from  the  file  history  is
1043              opened instead.
1044
1045       P      [declare-page-number()]  ``This is page number n.''  This can be
1046              used to make the `g' keystroke refer to a different page  number
1047              than  the  physical  page.  (If you want to use `logical' or TeX
1048              page numbers instead of physical pages, consider using  the  op‐
1049              tion  -useTeXpages  instead.)  The argument n should be given as
1050              prefix to this key.
1051
1052       Ctrl-p [print()] Opens a popup window for printing  the  DVI  file,  or
1053              parts of it.  See the section PRINT DIALOG for an explanation of
1054              the options available, and the resources to  customize  the  de‐
1055              fault behaviour.
1056
1057       p      [back-page()]  Moves  to  the  previous  page (or back n pages).
1058              Synonyms are `b', Ctrl-h and Backspace.
1059
1060       q      [quit()] Quits the program.
1061
1062       Ctrl-r [forward-page(0)] Redisplays the current page.
1063
1064       R      [reread-dvi-file()] Forces the dvi file to be reread.  This  al‐
1065              lows you to preview many versions of the same file while running
1066              xdvi only once.
1067
1068       r      [right()] Moves page right two thirds of a window-full.
1069
1070       Ctrl-s [save()] Opens a popup window for saving the DVI file, or  parts
1071              of it. See the section SAVE DIALOG below for more information on
1072              this.
1073
1074       S      [set-density()] Sets the density factor to be used when  shrink‐
1075              ing  bitmaps.  This should be a number between 0 and 100; higher
1076              numbers produce lighter characters.  If greyscaling mode  is  in
1077              effect,  this changes the value of gamma instead.  The new value
1078              of gamma is the given number divided by 100; negative values are
1079              allowed.
1080
1081       s      [set-shrink-factor()]  Changes  the  shrink  factor to the given
1082              number.  If no number is given, the smallest factor  that  makes
1083              the  entire  page  fit in the window will be used.  (Margins are
1084              ignored in this computation.)
1085
1086       T      [use-tex-pages()] Use logical  TeX  pages  (the  values  of  the
1087              \count0 register) instead of physical pages for the pagelist la‐
1088              bels and when jumping to a page in a document  via  goto-page().
1089              See also the -useTeXpages option.
1090
1091       t      [switch-magnifier-units()]  Switches the units used for the mag‐
1092              nifier tick marks, and for reporting the  distance  between  the
1093              mouse  pointer  and the ruler centre in ruler mode (see the sec‐
1094              tion MODES).  The default value is specified by the  X  resource
1095              tickUnits  (`mm'  by default). The units toggle through the fol‐
1096              lowing values; except for `px', they  all  correspond  to  TeX's
1097              units: mm (millimeters) pt (TeX points), in (inches), sp (scaled
1098              points, the unit used internally  by  TeX)  bp  (big  points  or
1099              `PostScript  points'), cc (cicero points), dd (didot points), pc
1100              (pica), and px (screen pixels).
1101
1102       Ctrl-u [back-page()toggle-mark()] Moves to the previous page, and  tog‐
1103              gles the mark for that page. This is the dual action to Ctrl-n.
1104
1105       u      [up()]  Moves  page up two thirds of a window-full. With a float
1106              argument to ``up'', moves up the  corresponding  fraction  of  a
1107              window-full.
1108
1109       Ctrl-v [show-source-specials()]  Show  bounding  boxes for every source
1110              special on the current page, and print the strings contained  in
1111              these specials to stderr. With prefix 1, show every bounding box
1112              on the page. This is for debugging purposes mainly.
1113
1114       V      [set-gs-alpha()] This key toggles  the  anti-aliasing  of  Post‐
1115              Script<tm>  specials  when  Ghostscript is used as renderer.  In
1116              addition the key sequences `0V' and  `1V'  clear  and  set  this
1117              flag, respectively.  See also the -gsalpha option.
1118
1119       v      [set-ps()] This key toggles the rendering of PostScript<tm> spe‐
1120              cials between 3 states:
1121
1122              - specials (like EPS graphics) are displayed;
1123
1124              - specials are displayed  along  with  their  bounding  box  (if
1125              available);
1126
1127              - only the bounding box is displayed.
1128
1129              The states can also be selected directly by using `1v', `2v' and
1130              `0v' respectively.  See also the -postscript option.
1131
1132       Ctrl-x [source-what-special()] Display  information  about  the  source
1133              special  next to the mouse cursor in the statusline. This is the
1134              same special that would be found by source-special(), but  with‐
1135              out invoking the editor. For debugging purposes.
1136
1137       x      [set-expert-mode()]  Toggles  expert  mode,  in  which  the sta‐
1138              tusline, the scrollbars, the menu buttons,  the  toolbar  (Motif
1139              only)  and the page list are not shown.  Typing `1x' toggles the
1140              display of the statusline at the bottom of  the  window.  Typing
1141              `2x'  toggles  the scrollbars (if available). For Xaw, `3x' tog‐
1142              gles the menu buttons and the page list, for Motif,  it  toggles
1143              the page list. In Motif, the additional bindings `4x' toggle the
1144              toolbar, and `5x' the menu bar.
1145              Without a prefix argument, all of the mentioned GUI elements are
1146              either switched on (if they had been invisible before) or off.
1147              Toggling the scrollbars may behave erratically with the Xaw wid‐
1148              gets; e.g. the scrollbars may reappear after resizing  the  win‐
1149              dow,  and at certain window sizes one of the scrollbars may fail
1150              to disappear.
1151              See also the option -expertmode (the numbers above correspond to
1152              the bits in the argument to -expertmode).
1153

MOUSE ACTIONS IN THE MAIN WINDOW

1155       The  mouse  actions  can be customized by setting the X resource mouse‐
1156       Translations.  Since there are three different  mouse  modes  (see  the
1157       section MODES below), there is a special action mouse-modes which lists
1158       the actions for each  of  the  three  modes:  mouse-modes("ACTIONS-FOR-
1159       MODE1",  "ACTIONS-FOR-MODE2",  "ACTIONS-FOR-MODE3").  If only one argu‐
1160       ment is specified, this action is used  for  all  modes.   The  default
1161       bindings are as follows:
1162
1163            xdvi.mouseTranslations: \
1164            Shift<Btn1Down>:mouse-modes("drag(+)")\n\
1165            Shift<Btn2Down>:mouse-modes("drag(|)")\n\
1166            Shift<Btn3Down>:mouse-modes("drag(-)")\n\
1167            Ctrl<Btn1Down>:mouse-modes("source-special()")\n\
1168            <Btn1Down>: mouse-modes("do-href()magnifier(*2)", "text-selection()", "ruler()")\n\
1169            <Btn2Down>: mouse-modes("do-href-newwindow()magnifier(*2)", "text-selection()", "ruler()")\n\
1170            <Btn3Down>: mouse-modes("magnifier(*3)")\n\
1171            <Btn4Down>: mouse-modes("wheel(-0.2)")\n\
1172            <Btn5Down>: mouse-modes("wheel(0.2)")\n\
1173            <Btn6Down>: mouse-modes("hwheel(-0.2)")\n\
1174            <Btn7Down>: mouse-modes("hwheel(0.2)")\n\
1175
1176       All  of these actions are described in more detail below.  Note the use
1177       of quote symbols around the action  strings,  which  are  necessary  to
1178       group  them  into  one argument.  Buttons 4, 5, 6, and 7 refer to wheel
1179       movements (wheel up/down/left/right) on wheel mice.  Not all mice  sup‐
1180       port horizontal scrolling.
1181
1182       The X Toolkit routines that implement translations do not support event
1183       types of Btn6Down or Btn7Down.  Because of this,  xdvi  implements  its
1184       own parser for translations given in mouseTranslations.  This parser is
1185       more limited than the parser built in to the  X  Toolkit.   The  string
1186       given  in mouseTranslations should not begin with ``#replace'', ``#aug‐
1187       ment'', or ``#override''.  Modifiers of the form @keysym are  not  sup‐
1188       ported,  and  the  event  type must be of the form BtnDown or BtnnDown,
1189       where n is a positive integer without leading zeroes.  Also, some limi‐
1190       tations apply to the action field.
1191
1192       do-href()
1193
1194       do-href-newwindow()
1195              Usually,  if  a  binding specifies more then one action, all ac‐
1196              tions are executed in a sequence.  The  hyperlink  bindings  do-
1197              href() and do-href-newwindow() are special in that they are used
1198              as an alternative to other actions that might follow them if the
1199              mouse  is  currently located on a hyperlink.  In this case, none
1200              of the other actions will be executed; otherwise, only the other
1201              actions are executed.
1202              The action do-href() jumps to the link target in the current xd‐
1203              vi window (eventually switching to another page),  and  do-href-
1204              newwindow()  opens  a  new instance of xdvi for the link target.
1205              In both cases, the location of the  target  is  indicated  by  a
1206              small  arrow  drawn  in  the same color as a visited link in the
1207              left corner of the window.
1208
1209       magnifier(n x m)
1210
1211       magnifier(*n)
1212              This action will pop up a ``magnifying glass'' which  shows  the
1213              unshrunk image of the region around the mouse pointer.  The mag‐
1214              nifier disappears when the mouse button is released. Moving  the
1215              mouse  cursor while holding the button down will move the magni‐
1216              fier.
1217              Different mouse buttons produce different sized windows, as  in‐
1218              dicated  by the argument of the magnifier() action. Its argument
1219              is either a string of the form widthxheight,  as  in  the  -mgsn
1220              command-line option, or one of the strings *1 through *5, refer‐
1221              ring to the value specified by the corresponding -mgsn option.
1222
1223       drag(+)
1224
1225       drag(|)
1226
1227       drag(-)
1228              Drags the page with the mouse. This action should have  one  pa‐
1229              rameter, the character ``|'', ``-'', or ``+'', indicating verti‐
1230              cal dragging only, horizontal dragging only, or dragging in  all
1231              directions.
1232
1233       source-special()
1234              This  action  starts a ``reverse search'', opening the editor at
1235              the location in the TeX file corresponding to the pointer  loca‐
1236              tion  in  the DVI file.  See the section on SOURCE SPECIALS, be‐
1237              low, for more information on this.
1238
1239       wheel()
1240              This action can be used to scroll the image with a wheel  mouse,
1241              where  it  is  usually  bound  to mouse button 4 (wheel up) or 5
1242              (wheel down).  The action takes one parameter, giving  the  dis‐
1243              tance  to scroll the image.  If the parameter contains a decimal
1244              point, the distance is given in wheel units; otherwise,  pixels.
1245              A negative value scrolls up, a positive value scrolls down.
1246
1247       hwheel()
1248              This  action can be used to scroll the image horizontally with a
1249              wheel mouse, where it is usually bound to mouse button 6  (wheel
1250              left)  or 7 (wheel right).  The action takes one parameter, giv‐
1251              ing the distance to scroll the image.  If the parameter contains
1252              a  decimal  point,  the distance is given in wheel units; other‐
1253              wise, pixels.  A negative value scrolls left, a  positive  value
1254              scrolls  right.  Not all mice support horizontal scrolling; this
1255              is mostly for touchpads, trackpads, etc.
1256
1257       text-selection()
1258              This action allows you to mark a rectangular region of  text  in
1259              the  DVI  file.  The text is put into the X selection buffer and
1260              can be pasted into other applications (e.g. text editors).  This
1261              works  similar  to the Plain text option in the Save dialog; see
1262              the discussion there for more information on encoding issues.
1263
1264       ruler()
1265              This action creates a cross-shaped ruler. Moving the  mouse  and
1266              holding  the  button  down  drags the ruler and lets you measure
1267              distances on the page.  See the section Ruler Mode for more  in‐
1268              formation on this.
1269

UNBOUND ACTIONS

1271       The following actions are not bound to a key by default, but are avail‐
1272       able for customization.
1273
1274       quit-confirm()
1275              Pops up a confirmation window to quit xdvi. To bind  it  to  the
1276              `q'  key instead of the default `quit()' action, put the follow‐
1277              ing into your ~/.Xdefaults file:
1278
1279              xdvi.mainTranslations: #override\
1280              <Key>q: quit-confirm()\n
1281
1282       down-or-next()
1283              Similar to unpause-or-next(): Moves down two-thirds of a window-
1284              full, or to the next page if already at the bottom of the page.
1285
1286       shrink-to-dpi()
1287              This  action  takes one (required) argument.  It sets the shrink
1288              factor to an integer so as to approximate the use of fonts  with
1289              the  corresponding  number  of  dots per inch.  If xdvi is using
1290              fonts scaled for p dots per inch, and the argument to shrink-to-
1291              dpi is n, then the corresponding shrink factor is the ratio p/n,
1292              rounded to the nearest integer.
1293
1294       user-exec()
1295              This action takes one (required) argument. Runs an external pro‐
1296              gram  specified  by  the  argument, which is tokenized on white‐
1297              space. The XDVI_FILE environment variable is set to the absolute
1298              pathname  of the DVI file, so that the program can find the DVI.
1299              As an example, to establish the key `m' as a keybinding that re‐
1300              generates  the DVI file with `make', put the following into your
1301              ~/.Xdefaults file:
1302
1303              xdvi.mainTranslations: #override\
1304              <Key>m: user-exec(xdvi-remake)\n
1305
1306              where `xdvi-remake' names a program in your  PATH  analogous  to
1307              `cd $(dirname $XDVI_FILE) && make $(basename $XDVI_FILE)'.  (See
1308              also the section SIGNALS for a way to get xdvi to reload the DVI
1309              file once it has been regenerated.)
1310

CUSTOMIZATION

1312       Key  and  mouse  button assignments can be changed by setting the main‐
1313       Translations resource to a string of translations  as  defined  in  the
1314       documentation  for  the X toolkit.  The actions should take the form of
1315       action names listed in the KEYSTROKES and MOUSE ACTIONS sections.
1316
1317       An exception to this are the Motif keys osfPageUp  (PgUp),  osfPageDown
1318       (PgDown),  osfBeginLine (Home) and osfEndLine (End) which are currently
1319       not customizable in the Motif version.
1320
1321       Key actions will usually be without arguments; if they  are  passed  an
1322       argument,  it represents the optional number or `prefix argument' typed
1323       prior to the action.
1324
1325       Some key actions may take special arguments, as follows:  The  argument
1326       of  goto-page  may be the letter `e', indicating the action of going to
1327       the end of the document.  The argument of set-shrink-factor may be  the
1328       letter  `a',  indicating  that  the  shrink factor should be set to the
1329       smallest value such that the page will fit in the window, or one of the
1330       signs `+' or `-', indicating that the shrink factor should be increased
1331       or decreased, respectively.  Finally, actions that would perform a tog‐
1332       gle,  such  as  set-keep-flag,  may receive an argument `t', indicating
1333       that the action should toggle regardless of the  current  prefix  argu‐
1334       ment.
1335
1336       Mouse   actions   should   refer   only  to  ButtonPress  events  (e.g.
1337       <Btn1Down>:magnifier(*1)).  The corresponding motion and release events
1338       will  be  handled  internally.   A  key  action may be bound to a mouse
1339       event, but not vice versa.
1340
1341       Usually the string of translations should begin with ``#override'', in‐
1342       dicating  that  the default key and mouse button assignments should not
1343       be discarded.
1344
1345       When keys or mouse buttons involving modifiers (such as Ctrl or  Shift)
1346       are  customized together with their non-modified equivalents, the modi‐
1347       fied keys should come first, for example:
1348
1349            xdvi.mainTranslations: #override \
1350            Shift<Key>s: select-dvi-file()\n\
1351            Ctrl<Key>s: save()\n\
1352            <Key>s: find()\n
1353
1354
1355       Because xdvi needs to capture pointer motion events, and because the  X
1356       Toolkit  translations  mechanism  cannot accommodate both motion events
1357       and double-click events at the same time, it is not possible to specify
1358       double-click  actions  in xdvi customizations.  For information on this
1359       and other aspects of translations, see the X Toolkit  Intrinsics  docu‐
1360       mentation.
1361
1362       There  is  no command-line option to set the mainTranslations resource,
1363       since changing this resource on the command line would  be  cumbersome.
1364       To set the resource for testing purposes, use the -xrm command-line op‐
1365       tion provided by the X toolkit.  For  example,  xdvi  -xrm  'XDvi.main‐
1366       Translations:  #override "z":quit()' ...  or xdvi -xrm 'XDvi.mainTrans‐
1367       lations: #override <Key>z:quit()' ...  will cause the key `z'  to  quit
1368       xdvi.
1369
1370       Some  resources  are provided to allow customization of the geometry of
1371       the Xaw command buttons.  Again, they are not changeable  via  command-
1372       line  options,  other than via the -xrm option.  All of these resources
1373       take integer values.
1374
1375       buttonSideSpacing
1376              The number of pixels to be placed on either side of the buttons.
1377              The default value is 6.
1378
1379       buttonTopSpacing
1380              The  number  of pixels between the top button and the top of the
1381              window.  The default value is 50.
1382
1383       buttonBetweenSpacing
1384              The number of pixels between the buttons.  The default value  is
1385              20.
1386
1387       buttonBetweenExtra
1388              The  number  of pixels of additional space to be inserted if the
1389              buttonTranslations resource string  contains  an  extra  newline
1390              character.  The default value is 50.
1391
1392       buttonBorderWidth
1393              The border width of the button windows.  The default value is 1.
1394

PAGE LIST

1396       The  scrollable page list on the right of the main window allows you to
1397       jump directly to a page in the DVI file.
1398
1399       Mouse-1
1400              Jumps to the page the mouse is located on.
1401
1402       Mouse-2
1403              [toggle-mark()] Toggle the mark of the current page.  The  marks
1404              are used by the `Print' and `Save to file' dialogs to select on‐
1405              ly marked pages from the DVI file.
1406
1407       When the mouse pointer is inside the page list, the mouse wheel switch‐
1408       es to the next or previous page.
1409

SCROLLBARS

1411       The scrollbars (if present) behave in the standard way:  pushing Button
1412       2 in a scrollbar moves the top or left edge of the  scrollbar  to  that
1413       point  and  optionally drags it; pushing Button 1 moves the image up or
1414       right by an amount equal to the distance from the button press  to  the
1415       upper  left-hand corner of the window; pushing Button 3 moves the image
1416       down or left by the same amount.
1417
1418       The scrollbars can be removed via the -expertmode flag/keystroke (which
1419       see).
1420

MAGNIFIER

1422       By default, the mouse buttons 1 to 5 will pop up a ``magnifying glass''
1423       that shows an unshrunken image of the page (i.e. an image at the  reso‐
1424       lution determined by the option/X resource pixels or mfmode) at varying
1425       sizes. When the magnifier is moved, small  ruler-like  tick  marks  are
1426       displayed  at  the  edges  of  the magnifier (unless the X resource de‐
1427       layRulers is set to false, in which case the tick marks will always  be
1428       displayed).   The  unit  of  the  marks is determined by the X resource
1429       tickUnits (mm by default). This unit can be changed at runtime via  the
1430       action  switch-magnifier-units(), by default bound to the keystroke `t'
1431       (see the description of that key, and of  switch-magnifier-units()  for
1432       more details on the units available).
1433       The  length  of  the tick marks can be changed via the X resource tick‐
1434       Length (4 by default). A zero or negative  value  suppresses  the  tick
1435       marks.
1436

PAGE HISTORY

1438       Xdvi keeps a history of viewed pages, and you can move through the his‐
1439       tory and delete items using the keys [ (pagehistory-back()),  ]  (page‐
1440       history-forward()),  Ctr-[  (pagehistory-delete-backward())  and  Ctr-]
1441       (pagehistory-delete-forward()).
1442
1443       When one of the history commands is used, the page history is displayed
1444       in  the  status line at the bottom of the window, with the current list
1445       item marked by square brackets `[', `]' and a left and right context of
1446       at most 10 items. File boundaries are marked by `#'.
1447
1448       The  size of the history can be customized with the X resource pageHis‐
1449       torySize (the default size is 1000 items). If the size is set to 0, the
1450       history commands are disabled.
1451
1453       The  actions  do-href()  and  do-href-newwindow()  (by default bound to
1454       Mouse-1 and Mouse-2 if the pointer is currently located on a hyperlink)
1455       can  be  used to open the link target in the same window (do-href()) or
1456       in a new window (do-href-newwindow()).
1457
1458       If the link target is not a file on  the  local  disk,  xdvi  tries  to
1459       launch a web browser (as specified by the -browser command line option,
1460       the BROWSER environment variable or the wwwBrowser X resource, in  this
1461       order) to retrieve the document. See the description of the BROWSER en‐
1462       vironment variable, below, for an example setting.
1463
1464       If the file is a local file, xdvi tries to determine if  it  is  a  DVI
1465       file.  If  it  is, xdvi will try to display the file; otherwise it will
1466       try to determine the MIME type of the file, and from that  an  applica‐
1467       tion  suitable for opening the file.  This is done by parsing the files
1468       specified by the environment variable EXTENSIONMAPS for  a  mapping  of
1469       filename  extensions to MIME types, and the files determined by the en‐
1470       vironment variable MAILCAPS for a mapping of MIME types to  application
1471       programs.  See the descriptions of these variables in the section ENVI‐
1472       RONMENT, below, for a more detailed description and the default  values
1473       of  these  variables. If no suitable files are found, a set of built-in
1474       default MIME types and applications is used.
1475
1476       Xdvi currently uses no heuristics apart from the filename suffix to de‐
1477       termine the mime type of a file. If a filename has no suffix, the value
1478       of the resource noMimeSuffix  is  used  (by  default  application/x-un‐
1479       known).  If the suffix doesn't match any of the suffixes in mime.types,
1480       the value of the resource unknownMimeSuffix is used (by default  appli‐
1481       cation/x-unknown).   If  the mailcap entries do not list a viewer for a
1482       given mime type, xdvi will show a warning popup. If you want  to  avoid
1483       this  warning,  and for example want to always use the netscape browser
1484       for unknown MIME types, you  could  add  the  following  line  to  your
1485       ~/.mailcap file:
1486
1487           application/xdvi-unknown; \
1488               netscape -raise -remote 'openURL(%s,new-window)'
1489
1490
1492       The keystroke Ctrl-f or the menu entry File > Find ...  (or the `Binoc‐
1493       ulars' symbol in the toolbar, for  Motif)  opens  a  dialog  window  to
1494       search  for a text string or a regular expression in the DVI file.  The
1495       keystroke Ctrl-g jumps to the next match (like pressing the `Find' but‐
1496       ton in the search window).
1497
1498       By default, the matches are highlighted in inverted color.  If the dis‐
1499       play isn't running in TrueColor, or if the X resource matchHighlightIn‐
1500       verted  is  set to false or the command-line option -nomatchinverted is
1501       used, xdvi will instead draw a rectangle in highlight  color  (see  the
1502       -hl option) around the match.
1503
1504       If  a match crosses a page boundary, only the part on the first page is
1505       highlighted.  Xdvi will scan up to 2 adjacent pages  to  match  strings
1506       crossing  page boundaries; but note that header or footer lines, or in‐
1507       tervening float pages will be treated as parts  of  the  scanned  text.
1508       Such text will usually cause multi-page matching to fail.
1509
1510       This  emphasizes the fact that searching in the formatted text (the DVI
1511       output) works differently from searching in the source text:  Searching
1512       in  the  DVI  file makes it easier to skip formatting instructions, and
1513       makes it possible to search for e.g. hyphenation and equation  numbers;
1514       but  sometimes  the formatting results can also get in the way, e.g. in
1515       the case of footnotes. In these cases it's better to search in the  TeX
1516       source  instead. The use of source specials will make switching between
1517       the xdvi display and the editor with the TeX  source  easier;  see  the
1518       section SOURCE SPECIALS below for more information on this.
1519
1520       The  text  extracted  from the DVI file is in encoded in UTF-8 (you can
1521       view that text by saving the file in UTF-8 format via the File  >  Save
1522       as  ...  menu item).  If xdvi has been compiled with locale, nl_langin‐
1523       fo() and iconv support, the search term is converted from the character
1524       set  specified by the current locale into UTF-8. (See the output of lo‐
1525       cale -a for a list of locale settings available on  your  system).   If
1526       nl_langinfo() is not available, but iconv is, you can specify the input
1527       encoding for iconv via the X resource textEncoding (see the  output  of
1528       iconv -l for a list of valid encodings). If iconv support is not avail‐
1529       able, only the encodings ISO-8859-1  and  UTF-8  are  supported  (these
1530       names are case-insensitive).
1531
1532       Ideographic characters from CJKV fonts are treated specially: All white
1533       space (spaces and newlines) before and after such characters is ignored
1534       in the search string and in the DVI file.
1535
1536       To match a newline character, use \n in the search string; to match the
1537       string \n, use \\n.
1538
1539       If the checkbox Regular Expression is activated, the string is  treated
1540       as  a  regular  expression in extended POSIX syntax, with the following
1541       properties:
1542
1543         - a? matches a zero or one times.
1544
1545         - a* matches a zero or more times.
1546
1547         - a+ matches a one or more times.  Note that * and + are greedy, i.e.
1548           they match the longest possible substring.
1549
1550         - The  pattern  .  matches  any character except for newline. To also
1551           match a newline, use `(.|\n)'.
1552
1553         - a{n} matches a exactly n times.
1554
1555         - a{n,m} matches a at least n and no more than m times.
1556
1557         - a|b matches a or b.  Brackets  can  be  used  for  grouping,  e.g.:
1558           (a|b)|c.
1559
1560         - The  string  matched by the nth group can be referenced by \n, e.g.
1561           \1 refers to the first match.
1562
1563         - The characters ^ and $ match the beginning and the end of  a  line,
1564           respectively.
1565
1566         - [abc]  matches  any  of  the letters a, b, c, and [a-z] matches all
1567           characters from a to z.
1568
1569         - Each item in a regular expression can also be one of the  following
1570           POSIX character classes:
1571           [[:alnum:]] [[:alpha:]] [[:blank:]] [[:cntrl:]] [[:digit:]]
1572           [[:graph:]] [[:lower:]] [[:print:]] [[:space:]] [[:upper:]]
1573
1574
1575           These can be negated by inserting a ^ symbol after the first brack‐
1576           et: [^[:alpha:]]
1577
1578           For more details on POSIX regular expressions, see  e.g.  the  IEEE
1579           Std 1003.1 standard definition available online from:
1580
1581           http://www.opengroup.org/onlinepubs/007904975/basedefs/xbd_chap09.html
1582
1583         - As  a non-standard extension, the following Perl-like abbreviations
1584           can be used instead of the POSIX classes:
1585
1586           Symbol   Meaning                       POSIX Class
1587
1588               \w   an alphanumeric character     [[:alnum:]]
1589               \W   a non-alphanumeric character  [^[:alnum:]]
1590               \d   a digit character             [[:digit:]]
1591               \D   a non-digit character         [^[:digit:]]
1592               \s   a whitespace character        [[:space:]]
1593               \S   a non-whitespace character    [^[:space:]]
1594
1595
1596         - The following characters are special symbols; they need to  be  es‐
1597           caped with \ in order to match them literally:  ( ) [ ] . * ? + ^ $
1598           \.
1599
1600         - Matches of length zero are silently skipped.
1601
1602       The dialog also provides checkboxes to:
1603
1604         - search backwards;
1605
1606         - match in a case-sensitive manner (the default is  to  ignore  case,
1607           i.e. a search string Test will match both the strings test and TEST
1608           in the DVI file);
1609
1610         - ignore line breaks and hyphens: This removes  all  hyphens  at  the
1611           ends  of  lines  and the following newline characters, and replaces
1612           all remaining newline characters by  white  spaces.  So  hyphenated
1613           words  will  appear as one word to the search, and a search for two
1614           words with a space in between will also match the words if they are
1615           separated by a linebreak.
1616           Note  that  the  hyphen removal may cause unwanted side effects for
1617           compound words containing hyphens that are wrapped  after  the  hy‐
1618           phen, and that replacing the newlines affects the interpretation of
1619           regular expressions as follows: The . pattern will also match  new‐
1620           lines,  and  ^  and  $ won't match begin and end of lines any more.
1621           (Since currently there is no option for turning off the  greediness
1622           of  *  and +, turning on this option will usually result in matches
1623           that are longer than desired.)
1624
1625       The current checkbox settings are saved in the ~/.xdvirc file.
1626
1628       The print dialog window allows you to print  all  pages,  marked  pages
1629       (click  or  drag  Mouse-2 in the page list to mark them), or a range of
1630       pages. Note that the page numbers always refer to physical pages, so if
1631       you're  using the option `use TeX pages', you may want to disable it to
1632       make it easier to determine the correct page  numbers  (or  avoid  this
1633       problem altogether by marking the pages to be printed).
1634
1635       The  value  of  the  Printer  text filed is passed to dvips via the -o!
1636       mechanism, as a single argument after the `!'. Any arguments listed  in
1637       the Dvips options field are segmented at whitespace and passed as sepa‐
1638       rate arguments to dvips.  If you e.g. want to print the file 2-up,  you
1639       should enter the following string into the Printer field:
1640
1641                psnup -2 -q | lpr -Plp
1642
1643
1644       There  are  several resources for customizing the behaviour and the de‐
1645       fault entries of the print dialog:
1646
1647       dvipsPrinterString
1648
1649       dvipsOptionsString
1650              These can be used to provide default entries for the Printer and
1651              the Dvips options text fields, respectively. If no paper size is
1652              specified in the DVI file (via e.g. \usepackage[dvips]{geometry}
1653              -  this is the preferred method), the input field is initialized
1654              with the current value of the command line option/X resource pa‐
1655              per.   E.g.  the  option -paper a4r is translated into the dvips
1656              options -t a4 -t landscape.  Note that  no  check  is  performed
1657              whether dvips actually understands these options (it will ignore
1658              them if it can't); currently not all options used  by  xdvi  are
1659              also covered by dvips.
1660
1661       dvipsHangTime
1662
1663       dvipsFailHangTime
1664              These  specify  the  time  (in  milliseconds)  that the printing
1665              progress window will stay open after the dvips process has  ter‐
1666              minated.  The value of dvipsHangTime is used if the process ter‐
1667              minates successfully; dvipsFailHangTime is used if it terminates
1668              with an error. The default values are 1.5 and 5 seconds, respec‐
1669              tively.  If both values are negative, the window will stay  open
1670              until it is closed by the user.
1671

SAVE DIALOG

1673       This dialog allows you to save all or selected/marked pages in the cur‐
1674       rent DVI file. You can save in one of the following formats:
1675
1676         - PostScript (uses dvips to convert the  DVI  file  to  a  PostScript
1677           file, just like when printing to a PostScript file).
1678
1679         - PDF (first uses dvips to convert the DVI file to a PostScript file,
1680           then uses ps2pdf to convert the PostScript file to PDF).
1681
1682         - Plain text in ISO-8859-1 or UTF-8 encoding. The  latter  will  pre‐
1683           serve  more  of the special LaTeX characters e.g. from mathematical
1684           mode. Note however that e.g. only few of LaTeX's mathematical  sym‐
1685           bols can be rendered correctly as text; so this functionality works
1686           best for plain text documents.  If a character cannot be  displayed
1687           in  the  selected  charset,  it  is replaced by `\' followed by the
1688           hexadecimal character code.  If a character is  not  recognized  at
1689           all, it is replaced by `?'.
1690
1691       The  programs  for  PostScript and PDF conversion can be customized via
1692       the command line  options  or  X  resources  -dvipspath/.dvipsPath  and
1693       -ps2pdfpath/.ps2pdfPath, respectively; see the explanation of these op‐
1694       tions above for more details.
1695

MODES

1697       The keystroke Ctrl-m [switch-mode()] switches between  three  different
1698       mouse  bindings, which can also be activated via the Modes menu (in Mo‐
1699       tif, this is a submenu of the Options menu called Mouse Mode).  The de‐
1700       fault mode at startup can be customized via the X resource mouseMode or
1701       the command-line option -mousemode.  The default startup mode is Magni‐
1702       fier Mode.
1703
1704       Note:  The  modes  are  implemented by changing the magnifier() action.
1705       Switching the mode will not work if Mouse-1 has been customized  to  an
1706       action sequence that does not contain the magnifier() action.
1707
1708       Magnifier Mode
1709              In  this  mode,  the  mouse buttons 1 to 5 pop up a ``magnifying
1710              glass'' that shows an unshrunken image of the page (i.e. an  im‐
1711              age at the resolution determined by the option/X resource pixels
1712              or mfmode) at varying sizes. When the magnifier is moved,  small
1713              ruler-like tick marks are displayed at the edges of the magnifi‐
1714              er (unless the X resource delayRulers is set to false, in  which
1715              case  the  tick  marks  are  always displayed).  The unit of the
1716              marks is determined by the X resource tickUnits (mm by default).
1717              This unit can be changed at runtime via the action switch-magni‐
1718              fier-units(), by default bound to the keystroke `t' (see the de‐
1719              scription  of that key, and of switch-magnifier-units() for more
1720              details on the units available).
1721              The length of the tick marks can be changed via the  X  resource
1722              tickLength  (4  by default). A zero or negative value suppresses
1723              the tick marks.
1724
1725       Text Selection Mode
1726              This mode allows you to select a rectangular region of  text  in
1727              the  DVI  file by holding down Mouse-1 and moving the mouse. The
1728              text is put into the X primary selection so that it can be past‐
1729              ed into other X applications with Mouse-2 as usual.
1730              If  xdvi  has been compiled with locale, nl_langinfo() and iconv
1731              support, the selected text is converted into the  character  set
1732              of the current locale (see the output of locale -a for a list of
1733              locale settings available on your system).  If nl_langinfo()  is
1734              not  available, but iconv is, you can specify the input encoding
1735              for iconv via the X resource textEncoding  (see  the  output  of
1736              iconv -l for a list of valid encodings). If iconv support is not
1737              available, only the encodings ISO-8859-1 and UTF-8 are supported
1738              (these names are case-insensitive).
1739              Note that UTF-8 is the only encoding that can render all charac‐
1740              ters (e.g. mathematical symbols) of a DVI file. If ISO-8859-1 is
1741              active,  characters that cannot be displayed are replaced by `\'
1742              followed by the hexadecimal character code.   For  other  encod‐
1743              ings,  such  characters  may trigger iconv error messages.  If a
1744              character is not recognized at all, it is replaced by `?'.
1745              To extract larger portions of text, you can  alternatively  save
1746              selected  pages or the entire file in text format via the File >
1747              Save as ...  menu.
1748
1749       Ruler Mode
1750              This mode provides a simple way of measuring  distances  on  the
1751              page.
1752              When  this  mode  is  activated, the mouse cursor changes into a
1753              thin cross, and a larger, cross-shaped ruler  is  drawn  in  the
1754              highlight  color  at  the mouse location. The ruler doesn't have
1755              units attached to it; instead, the current distance between  the
1756              ruler  and  the mouse cursor is continuously printed to the sta‐
1757              tusline.
1758              When activating Ruler Mode, the ruler is at  first  attached  to
1759              the  mouse and can be moved around. It can then be positioned at
1760              a fixed place by clicking Mouse-1.  After that, the mouse cursor
1761              can  be  moved to measure the horizontal (dx), vertical (dy) and
1762              direct (shortest) (dr) distance between the ruler  center  point
1763              and the mouse.
1764              Clicking  Mouse-1 again will move the ruler to the current mouse
1765              position, and holding down Mouse-1 will drag the ruler around.
1766              In Ruler Mode, the following special keybindings extend  or  re‐
1767              place the default bindings:
1768
1769              o      [ruler-snap-origin()]  Snap  the ruler back to the origin
1770                     coordinate (0,0).
1771
1772              t      [overrides switch-magnifier-units()] Toggle between vari‐
1773                     ous ruler units, which can be specified by the X resource
1774                     tickUnits (`mm' by default).
1775
1776              P      [overrides  declare-page-number()]  Print  the  distances
1777                     shown in the statusline to standard output.
1778

TOOLBAR (Motif only)

1780       The  Motif  toolbar  can  also be customized. The XPM file used for the
1781       toolbar icons can be  specified  via  the  resource  toolbarPixmapFile,
1782       which  should  contain  a  filename  that can be found in one of XFILE‐
1783       SEARCHPATH or XDVIINPUTS (see the section FILE SEARCHING below for more
1784       information  on  these  variables).  Xdvi will try to split this pixmap
1785       horizontally into n pieces, where each piece is as wide as  the  pixmap
1786       is  high  and  is treated as an image for toolbar button n.  This means
1787       that each icon should be a square, and that the  entire  pixmap  should
1788       have width n x h if h is the height of the pixmap.
1789
1790       The  resource  toolbarTranslations  can be used to map icons/buttons to
1791       specific actions.  The resource should contain a  string  separated  by
1792       newline characters, similar to the resources mainTranslations and menu‐
1793       Translations.  Every line must contain either a spacer  definition,  or
1794       an icon definition:
1795
1796       A  spacer  definition  is  a string SPACER(n), where n is the number of
1797       pixels inserted as separator to the following button.
1798
1799       An icon definition is a colon-separated list containing  the  following
1800       elements:
1801
1802         - the index of an icon in the pixmap file (starting from zero);
1803
1804         - a long tooltip string, displayed in the status area;
1805
1806         - a short tooltip string, displayed as popup;
1807
1808         -  a sequence of actions to be performed when the corresponding tool‐
1809         bar button is pushed.
1810
1811       To illustrate this, the default value of toolbarTranslations  looks  as
1812       follows:
1813
1814            xdvi.toolbarTranslations: \
1815               SPACER(5)\n\
1816               0:Open a new document   (Key\\: Ctrl-f):\
1817                    Open file:select-dvi-file()\n\
1818               SPACER(10)\n\
1819               1:Reread this document   (Key\\: R):\
1820                    Reread file:reread-dvi-file()\n\
1821               SPACER(10)\n\
1822               2:Go to the first page of this document   (Key\\: 1g):\
1823                    Go to first page:goto-page(1)\n\
1824               3:Go to the previous page of this document   (Key\\: p):\
1825                    Go to previous page:back-page(1)\n\
1826               4:Go to the next page of this document   (Key\\: n):\
1827                    Go to next page:forward-page(1)\n\
1828               5:Go to the last page of this document   (Key\\: g):\
1829                    Go to last page:goto-page()\n\
1830               SPACER(10)\n\
1831               6:Enlarge the display   (Key\\: Ctrl-+):Zoom in:\
1832                    set-shrink-factor(+)\n\
1833               7:Shrink the display   (Key\\: Ctrl--):Zoom out:\
1834                    set-shrink-factor(-)\n\
1835               SPACER(10)\n\
1836               8:Jump back to the previous hyperlink   (Key\\: B):\
1837                    Back hyperlink:htex-back()\n\
1838               SPACER(10)\n\
1839               10:Print this document:Print:print()\n\
1840               SPACER(10)\n\
1841               11:Toggle marks for odd pages   (Key\\: 1m):\
1842                    Toggle odd:toggle-mark(1)\n\
1843               12:Toggle marks for even pages   (Key\\: 2m):\
1844                    Toggle even:toggle-mark(2)\n\
1845               13:Toggle mark for current page   (Key\\: 2m):\
1846                    Toggle current:toggle-mark()\n\
1847               14:Unmark all pages   (Key\\: 0m):\
1848                    Unmark all:toggle-mark(0)\n\
1849               SPACER(10)\n\
1850               18:Display fonts darker   (Key\\: Alt-Ctrl-+):\
1851                    Fonts darker:change-density(5)\n\
1852               19:Display fonts lighter   (Key\\: Alt-Ctrl--):\
1853                    Fonts lighter:change-density(-5)\n
1854
1855
1856       When  the  mouse  remains over a toolbar button for a certain period, a
1857       `tooltip' window is shown, describing what the button  does  using  the
1858       short  tooltip  string  from  the above resource. At the same time, the
1859       long tooltip string is displayed in the statusline.  The appearance and
1860       behaviour  of  these  tooltips  can be customized via the following re‐
1861       sources:
1862
1863       tipShell.background
1864              Background color of the tooltip window.
1865
1866       tipShell.fontSet
1867              Font used for the tooltip.
1868
1869       tipShell.waitPeriod
1870              The time (in milliseconds) the mouse pointer needs  to  be  over
1871              the  button  before  the  tooltip is shown. Set it to a negative
1872              value to suppress the tooltips altogether.
1873
1874

GREYSCALING AND COLORMAPS

1876       The greyscale anti-aliasing feature in xdvi will not work at  its  best
1877       if  the display does not have enough colors available.  This can happen
1878       if other applications are using most of the colormap (even if they  are
1879       iconified).   If this occurs, then xdvi will print an error message and
1880       turn on the -copy option.  This will result  in  overstrike  characters
1881       appearing wrong; it may also result in poor display quality if the num‐
1882       ber of available colors is very small.
1883
1884       Typically this problem occurs on displays that allocate eight  bits  of
1885       video  memory  per  pixel.  To see how many bits per pixel your display
1886       uses, type xwininfo in an xterm window, and then click the mouse on the
1887       root  window  when  asked.  The ``Depth:'' entry will tell you how many
1888       bits are allocated per pixel.
1889
1890       Displays using at least 15 bits per pixel are typically TrueColor visu‐
1891       als, which do not have this problem, since their colormap is permanent‐
1892       ly allocated and available to all applications.  (The visual  class  is
1893       also  displayed  by  xwininfo.)  For more information on visual classes
1894       see the documentation for the X Window System.
1895
1896       To alleviate this problem, therefore, one may (a) run  with  more  bits
1897       per  pixel  (this may require adding more video memory or replacing the
1898       video card), (b) shut down other applications that may be using much of
1899       the  colormap  and then restart xdvi, or (c) run xdvi with the -install
1900       option.
1901
1902       One application which is often the cause of this problem  is  Netscape.
1903       In  this  case  there are two more alternatives to remedying the situa‐
1904       tion.  One can run ``netscape -install'' to cause Netscape to install a
1905       private colormap.  This can cause colors to change in bizarre ways when
1906       the mouse is moved to a different window.  Or, one can  run  ``netscape
1907       -ncols 220'' to limit Netscape to a smaller number of colors.  A small‐
1908       er number will ensure that other applications have more  colors  avail‐
1909       able, but will degrade the color quality in the Netscape window.
1910
1911

HANDLING OF POSTSCRIPT FIGURES

1913       Xdvi  can  display  Encapsulated PostScript (EPS) files included in the
1914       dvi file.  Such files are first searched for in the directory where the
1915       dvi  file is, and then using normal Kpathsea rules.  There is an excep‐
1916       tion to this, however:  if the file name begins with  a  backtick  (`),
1917       then  the  remaining  characters  in the file name give a shell command
1918       (often zcat) which is executed; its standard output is then sent to  be
1919       interpreted as PostScript.  Since the execution of arbitrary shell com‐
1920       mands with the user's permissions is a huge security  risk,  evaluation
1921       of these backtick commands is disabled by default. It needs to be acti‐
1922       vated via the -allowshell command-line option.  NOTE: You should  never
1923       use  this  option  when viewing documents that you didn't compile your‐
1924       self. The backtick specials are not needed  for  uncompressing  gzipped
1925       PostScript  files,  since  xdvi  can do that on the fly if the filename
1926       ends with .eps.gz or .eps.Z (and if the first bytes of the  file  indi‐
1927       cate  that the file is indeed compressed).  This is both safer and more
1928       flexible than the backtick approach, since the default  file  searching
1929       rules will apply to such filenames too.
1930

TYPE 1 FONTS

1932       Using FreeType (version 2), xdvi can render PostScript<tm> Type 1 fonts
1933       directly, without the route via TeX pixel (pk) fonts. The advantage  of
1934       this  is  that  only  one size of each font needs to be stored on disk.
1935       Unless the -notype1fonts option is used, xdvi will try to render  every
1936       font using FreeType. Only as a fallback will it invoke an external pro‐
1937       gram (like mktexpk, which in turn may invoke utilities  like  ps2pk  or
1938       gsftopk)  to  generate  a pixel font from the Type 1 source. The direct
1939       rendering of the Computer Modern  fonts  should  work  out-of-the  box,
1940       whereas  other  Type  1  fonts such as the 35 `standard' PostScript<tm>
1941       fonts resident in printers may need to be made accessible for use  with
1942       xdvi,  unless your system administrator or TeX distribution has already
1943       done so (which is the case e.g. for current TeX Live systems). For  the
1944       35  PostScript<tm>  resident fonts, xdvik will search using the Fontmap
1945       provided with Ghostscript, if necessary.  Also, the xdvik  distribution
1946       comes  with a utility called t1mapper to make these fonts available for
1947       xdvi; see the manual page for t1mapper(1) for usage details.  This pro‐
1948       gram is likely to be dropped in the future, however, since it is proba‐
1949       bly not needed anymore.
1950

SPECIALS (GENERALLY)

1952       Any of the specials used by xdvi may  be  preceded  by  the  characters
1953       ``xdvi:''.   Doing so does not change the behavior of the special under
1954       xdvi, but it tells other dvi drivers (such as e.g. dvips) to ignore the
1955       special.
1956

SOURCE SPECIALS

1958       Some  TeX implementations or macro packages provide the facility to au‐
1959       tomatically include so-called `source specials' into a DVI file.  These
1960       contain  the  line number, eventually a column number, and the filename
1961       of the .tex source. This makes it possible to jump from a .dvi file  to
1962       the  corresponding place in the .tex source and vice versa (also called
1963       `inverse search' - jumping from the DVI file to the TeX  file  is  also
1964       known  as  `reverse  search',  and jumping from the TeX file to the DVI
1965       file as `forward search').
1966
1967       To be usable with xdvi, source specials in the dvi file must  have  one
1968       of the following formats:
1969
1970                src:line[ ]filename
1971                src:line:col[ ]filename
1972                src:line
1973                src:line:col
1974                src::col
1975
1976       If  filename or line are omitted, the most recent values are used.  The
1977       first source special on each page must be  in  one  of  the  first  two
1978       forms, since defaults are not inherited across pages.
1979
1980       You  will need a TeX implementation that provides an appropriate switch
1981       (e.g. -src) or a macro  package  (such  as  srcltx.sty  or  srctex.sty,
1982       available  from  CTAN:macros/latex/contrib/supported/srcltx/) to insert
1983       such source specials into the DVI file.
1984
1985       For reverse search, the combination Ctrl-Mouse 1 will make xdvi open an
1986       editor (the value of the -editor command line option) with the file and
1987       the line number of the .tex source. See the description of the  -editor
1988       option for more information and example settings.
1989
1990       For  forward  search, xdvi has a -sourceposition option that makes xdvi
1991       jump to the page in the DVI file corresponding to the  given  line  (or
1992       the  closest  line  having  a source special) of the specified file and
1993       highlight the found region. See the description of the  -sourceposition
1994       option for more details.
1995
1996       More information on setting up various editors for use with source spe‐
1997       cials can be found at:
1998
1999            http://xdvi.sourceforge.net/inverse-search.html
2000
2001

PAPERSIZE SPECIALS

2003       xdvi accepts specials to set the paper size for  the  document.   These
2004       specials should be of the form
2005
2006                papersize=[*]width,height
2007
2008
2009       where  width and height give the width and height of the paper, respec‐
2010       tively.  Each of these should appear in the form of  a  decimal  number
2011       followed  by  any of the two-letter abbreviations for units accepted by
2012       TeX (pt, pc, in, bp, cm, mm, dd, cc, or sp).  If an  asterisk  (*)  ap‐
2013       pears  just  before the width, then the measurements refer to the docu‐
2014       ment dimensions (e.g. pt as opposed to truept).  This  allows  a  macro
2015       package  to  vary  the page size according to elements of the document;
2016       e.g.
2017
2018            \special{xdvi: papersize=*\number\wd\mybox sp,
2019                     \number\ht\mybox sp}
2020
2021
2022       Except for the asterisk, this format is compatible with dvips.
2023
2024       The last papersize special on a page determines the size of that  page.
2025       If  there is no such special on a given page, the most recent papersize
2026       is used, or, if there are no papersize specials on any preceding  page,
2027       then  the  value of the paper resource (or -paper option on the command
2028       line) is used.  Thus the paper size may vary for different pages of the
2029       dvi file.
2030
2031       If  the  paper  resource  (or -paper command-line option) begins with a
2032       plus sign (`+'), then all papersize specials in the dvi  file  are  ig‐
2033       nored.
2034

COLOR SPECIALS

2036       The color specials supported by xdvi are the same as those supported by
2037       dvips, except that the literal PostScript color  specification  (as  in
2038       the  AggiePattern example in the dvips documentation) is not supported.
2039       There are also some restrictions due to the way xdvi's   drawing   rou‐
2040       tines  are  implemented; e.g. the \colorbox and \fcolorbox macros don't
2041       work with xdvi.  See the section LIMITATIONS below for more information
2042       on  these restrictions.  Xdvi supports the same list of named colors as
2043       dvips does, namely:
2044
2045       Apricot, Aquamarine, Bittersweet, Black, Blue,  BlueGreen,  BlueViolet,
2046       BrickRed, Brown, BurntOrange, CadetBlue, CarnationPink, Cerulean, Corn‐
2047       flowerBlue, Cyan, Dandelion, DarkOrchid, Emerald, ForestGreen, Fuchsia,
2048       Goldenrod,  Gray, Green, GreenYellow, JungleGreen, Lavender, LimeGreen,
2049       Magenta, Mahogany, Maroon,  Melon,  MidnightBlue,  Mulberry,  NavyBlue,
2050       OliveGreen,  Orange,  OrangeRed,  Orchid, Peach, Periwinkle, PineGreen,
2051       Plum, ProcessBlue, Purple, RawSienna, Red, RedOrange,  RedViolet,  Rho‐
2052       damine,  RoyalBlue,  RoyalPurple,  RubineRed,  Salmon, SeaGreen, Sepia,
2053       SkyBlue, SpringGreen, Tan, TealBlue, Thistle, Turquoise, Violet, Viole‐
2054       tRed, White, WildStrawberry, Yellow, YellowGreen, YellowOrange.
2055
2056       Note that these names are case sensitive.
2057
2058       The  documentation  of the LaTeX color package provides more details on
2059       how to use such specials with LaTeX; see the dvips documentation for  a
2060       detailed description of the syntax and semantics of the color specials.
2061

SIGNALS

2063       When xdvi receives a SIGUSR1 signal, it rereads the dvi file.
2064

ENVIRONMENT

2066       Xdvik  uses the same environment variables and algorithms for searching
2067       for font files as TeX and  friends.   See  the  documentation  for  the
2068       Kpathsea library, kpathsea.dvi, for a detailed description of these.
2069
2070       In addition, xdvik accepts the following variables:
2071
2072       DISPLAY
2073              Specifies which graphics display terminal to use.
2074
2075       KPATHSEA_DEBUG
2076              Trace  Kpathsea  lookups;  set it to -1 (= all bits on) for com‐
2077              plete tracing.
2078
2079       EXTENSIONMAPS
2080              A list of files to be searched for mime types  entries  (as  for
2081              Acrobat Reader).  Earlier entries in one of these files override
2082              later ones.  If this variable is not set, the following  default
2083              path is used:
2084
2085              $HOME/.mime.types:/etc/mime.types:\
2086                  /usr/etc/mime.types:/usr/local/etc/mime.types
2087
2088
2089
2090       MAILCAPS
2091              A  list  of files to be searched for mailcap entries, as defined
2092              by RFC 1343. See this RFC or the mailcap(4) manual  page  for  a
2093              detailed description of the mailcap file format.  Currently, on‐
2094              ly the following mailcap features are supported:
2095
2096              test=command
2097                     The entry is only used if command can be executed via the
2098                     system() call and if the system() call returns with value
2099                     0 (success).  The command string may contain  the  format
2100                     string %s, which will be replaced by the file name.
2101
2102              needsterminal
2103                     If  this  flag is used, the command will be executed in a
2104                     new xterm window by prepending ``xterm -e '' to the  com‐
2105                     mand string.
2106
2107              All other fields in the mailcap entry are ignored by xdvi.  Ear‐
2108              lier entries in one of these files override later ones.  If  the
2109              variable is not defined, the following default path is used:
2110
2111                  $HOME/.mailcap:/etc/mailcap:/usr/etc/mailcap:\
2112                      /usr/local/etc/mailcap
2113
2114              For  security  reasons, some special characters (i.e. ( ) ` \ ;)
2115              are escaped in the argument before passing it to system().
2116
2117       BROWSER
2118              Determines the web browser used to open external links (i.e. all
2119              URLs  that don't start with the `file:' scheme and are not rela‐
2120              tive links in the local DVI file), and to open links  for  which
2121              no  viewer has been specified in the mailcap files. The value of
2122              this variable is a colon-separated list of commands.  Xdvi  will
2123              try  each  of  them in sequence until one succeeds (i.e. doesn't
2124              immediately return with status 0). This allows  you  to  specify
2125              your  favourite  browser at the beginning, and fallback browsers
2126              at the end. Every occurrence of %s in the string is replaced  by
2127              the  target  URL; every occurrence of %% is replaced by a single
2128              %.  If no %s is present, the URL string is added as an extra ar‐
2129              gument.
2130              An example setting is:
2131
2132              netscape  -raise  -remote 'openURL(%s,new-window)':xterm -e lynx
2133              %s:xterm -e wget %s:lynx %s:wget %s
2134
2135              See
2136
2137              http://www.catb.org/~esr/BROWSER/
2138
2139              for more details on the BROWSER environment variable.
2140
2141       GS_LIB A colon-separated list of  directories  to  search  for  Fontmap
2142              files,  etc.,  as used for Ghostscript.  It has the same meaning
2143              as it does when running Ghostscript.  In xdvik, it is used  when
2144              searching  for font files when the map file does not give a file
2145              name for the font (this should be quite rare).  The  command  gs
2146              -h  will list the default value that Ghostscript uses.  See also
2147              the XDVI_GS_LIB environment variable (below).
2148
2149       XDVI_GS_LIB
2150              This has the same effect as GS_LIB but affects only  xdvi.   Use
2151              this when you want to use a different value for GS_LIB when run‐
2152              ning xdvi, but use either the compiled-in default value or  some
2153              other  value  when  running Ghostscript.  If both GS_LIB and XD‐
2154              VI_GS_LIB are set, then xdvi uses XDVI_GS_LIB.  To use  the  de‐
2155              fault value compiled in to xdvi while still retaining the abili‐
2156              ty to set GS_LIB for use  with  Ghostscript,  you  can  set  XD‐
2157              VI_GS_LIB to the empty string.
2158
2159       TMPDIR The  directory  to  use for storing temporary files created when
2160              uncompressing PostScript files.
2161
2162       XEDITOR
2163              Determines the editor command used for source  special  `reverse
2164              search', if neither the -editor command-line option nor the .ed‐
2165              itor resource are  specified.   See  the description of the -ed‐
2166              itor command line option for details on the format.
2167
2168       VISUAL Determines  an editor to be opened in an xterm window if neither
2169              of -editor, .editor, or XEDITOR is specified.
2170
2171       EDITOR Determines an editor to be opened in an xterm window if  neither
2172              of -editor, .editor, XEDITOR or VISUAL is specified.
2173
2174       WWWBROWSER
2175              Obsolete; use BROWSER instead.
2176

LIMITATIONS

2178       xdvi  accepts many but not all types of PostScript specials accepted by
2179       dvips.  For example, it accepts most specials generated by epsf and ps‐
2180       fig.   It  does not, however, support bop-hook or eop-hook, nor does it
2181       allow PostScript commands to affect the rendering of  things  that  are
2182       not PostScript (for example, the ``NEAT'' and rotated ``A'' examples in
2183       the dvips manual).  These restrictions are due to the design  of  xdvi;
2184       in all likelihood they will always remain.
2185
2186       LaTeX2e rotation specials are currently not supported.
2187
2188       MetaPost files containing included text are not supported.
2189
2190       Xdvi's  color  handling  doesn't  support  the \colorbox and \fcolorbox
2191       macros;  this is not likely to change in the  near  future.  This  also
2192       means  that   e.g.  colored tables (as created by the colortbl package)
2193       may render incorrectly: Text in colors different from the default fore‐
2194       ground color may not be displayed. When the page is redrawn (e.g. after
2195       using the magnifier), the background color of the  cells  may  overdraw
2196       the text.
2197

FILES

2199       $HOME/.xdvirc
2200              A  file  that  holds  all settings that the user changed via the
2201              keys, the `Options' and the Xaw `Modes' menu and the dialogs, as
2202              X   resources.   These   resources   override  the  settings  in
2203              $HOME/.Xdefaults.  This file is ignored if the -q option is used
2204              or the noInitFile X resource is set.
2205
2206       config.xdvi
2207              An  optional configuration file for the Type 1 font setup, which
2208              specifies dvips-style map files specific to xdvik.  If used,  it
2209              should  be  present in the directory determined by the TEXCONFIG
2210              environment variable.  Its format is  similar  to  configuration
2211              files for dvips, except that it is only scanned for the names of
2212              map files (p and p+ directives).
2213

SEE ALSO

2215       X(1), dvips(1), mktexpk(1), ps2pk(1),  gsftopk(1),  t1mapper(1),  mail‐
2216       cap(4), the Kpathsea documentation, https://ctan.org/pkg/xdvi/, and the
2217       Xdvik home page at http://xdvi.sourceforge.net/.
2218

AUTHORS

2220       Eric Cooper, CMU, did a version for direct output to a  QVSS.  Modified
2221       for  X  by Bob Scheifler, MIT Laboratory for Computer Science. Modified
2222       for X11 by Mark Eichin, MIT SIPB. Additional enhancements by many  oth‐
2223       ers.
2224
2225       The  current maintainer of the original xdvi is Paul Vojta, U.C. Berke‐
2226       ley.
2227
2228       Code for the xdvik variant has been contributed by many  people,  whose
2229       names are scattered across the source files.
2230
2231       For the most up-to-date information, please visit:
2232
2233       http://xdvi.sourceforge.net
2234
2235       Please report all bugs to the SourceForge bug tracker:
2236
2237       http://sourceforge.net/tracker/?func=add&group_id=23164&atid=377580
2238
2239Xdvik 22.87.06                    2022-02-17                           XDVI(1)
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