1GRODVI(1)                   General Commands Manual                  GRODVI(1)
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NAME

6       grodvi - convert groff output to TeX DVI format
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SYNOPSIS

9       grodvi [-dl] [-F dir] [-p papersize] [-w n] [file ...]
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11       grodvi --help
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13       grodvi -v
14       grodvi --version
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DESCRIPTION

17       grodvi is a driver for groff that produces TeX DVI format.  Normally it
18       should be run by groff -Tdvi.  This will run troff -Tdvi; it will  also
19       input the macros in /usr/share/groff/1.22.4/tmac/dvi.tmac.
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21       The  DVI file generated by grodvi can be printed by any correctly-writ‐
22       ten DVI driver.  The troff drawing primitives are implemented using the
23       tpic  version 2 specials.  If the driver does not support these, the \D
24       commands will not produce any output.
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26       There is an additional drawing command available:
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28       \D'R dh dv'
29              Draw a rule (solid black rectangle), with one corner at the cur‐
30              rent position, and the diagonally opposite corner at the current
31              position +(dh,dv).  Afterwards the current position will  be  at
32              the  opposite  corner.  This produces a rule in the DVI file and
33              so can be printed even with a driver that does not  support  the
34              tpic specials unlike the other \D commands.
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36       The  groff  command \X'anything' is translated into the same command in
37       the DVI file as would be produced by \special{anything}  in  TeX;  any‐
38       thing may not contain a newline.
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40       For inclusion of EPS image files, -Tdvi loads pspic.tmac automatically,
41       providing the PSPIC macro.  Please check groff_tmac(5) for  a  detailed
42       description.
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44       Font  files for grodvi can be created from tfm files using tfmtodit(1).
45       The font description file should contain the following additional  com‐
46       mands:
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48       internalname name
49              The name of the tfm file (without the .tfm extension) is name.
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51       checksum n
52              The checksum in the tfm file is n.
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54       designsize n
55              The designsize in the tfm file is n.
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57       These are automatically generated by tfmtodit.
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59       The default color for \m and \M is black.  Currently, the drawing color
60       for \D commands is always black, and fill color values  are  translated
61       to gray.
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63       In  troff  the  \N  escape sequence can be used to access characters by
64       their position in the corresponding tfm file; all characters in the tfm
65       file can be accessed this way.
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67       By design, the DVI format doesn't care about physical dimensions of the
68       output medium.  Instead, grodvi emits the  equivalent  to  TeX's  \spe‐
69       cial{papersize=width,length}  on  the  first  page; dvips (and possibly
70       other DVI drivers) then sets the page size accordingly.  If either  the
71       page width or length is not positive, no papersize special is output.
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OPTIONS

74       Whitespace is permitted between a command-line option and its argument.
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76       -d     Do  not  use tpic specials to implement drawing commands.  Hori‐
77              zontal and vertical lines will be implemented by  rules.   Other
78              drawing commands will be ignored.
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80       -Fdir  Prepend  directory  dir/devname  to the search path for font and
81              device description files; name is the name of the  device,  usu‐
82              ally dvi.
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84       -l     Specify landscape orientation.
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86       -ppapersize
87              Specify  paper dimensions.  This overrides the papersize, paper‐
88              length, and paperwidth commands in the DESC file; it accepts the
89              same  arguments  as the papersize command (see groff_font(5) for
90              details).
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92       -v     Print the version number.
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94       -wn    Set the default line thickness to n thousandths of  an  em.   If
95              this  option  isn't  specified,  the  line thickness defaults to
96              0.04 em.
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USAGE

99       There are styles called R, I, B, and BI mounted  at  font  positions  1
100       to 4.   The  fonts  are grouped into families T and H having members in
101       each of these styles:
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103              TR     CM Roman (cmr10)
104              TI     CM Text Italic (cmti10)
105              TB     CM Bold Extended Roman (cmbx10)
106              TBI    CM Bold Extended Text Italic (cmbxti10)
107              HR     CM Sans Serif (cmss10)
108              HI     CM Slanted Sans Serif (cmssi10)
109              HB     CM Sans Serif Bold Extended (cmssbx10)
110              HBI    CM Slanted Sans Serif Bold Extended (cmssbxo10)
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112       There are also the following fonts which are not members of a family:
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114              CW     CM Typewriter Text (cmtt10)
115              CWI    CM Italic Typewriter Text (cmitt10)
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117       Special fonts are MI (cmmi10), S (cmsy10), EX  (cmex10),  SC  (cmtex10,
118       only  for  CW),  and,  perhaps surprisingly, TR, TI, and CW, due to the
119       different font encodings of text fonts.  For italic fonts, CWI is  used
120       instead of CW.
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122       Finally,  the  symbol  fonts  of  the American Mathematical Society are
123       available as special fonts SA (msam10)  and  SB  (msbm10).   These  two
124       fonts are not mounted by default.
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126       Using  the  option  -mec (which loads the file ec.tmac) provides the EC
127       and TC fonts.  The design of the EC family is very similar to  that  of
128       the  CM  fonts; additionally, they give a much better coverage of groff
129       symbols.  Note that ec.tmac must be called before any language-specific
130       files; it doesn't take care of hcode values.
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ENVIRONMENT

133       GROFF_FONT_PATH
134              A  list of directories in which to search for the devname direc‐
135              tory  in  addition  to  the  default  ones.   See  troff(1)  and
136              groff_font(5) for more details.
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FILES

139       /usr/share/groff/1.22.4/font/devdvi/DESC
140              Device description file.
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142       /usr/share/groff/1.22.4/font/devdvi/F
143              Font description file for font F.
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145       /usr/share/groff/1.22.4/tmac/dvi.tmac
146              Macros for use with grodvi.
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148       /usr/share/groff/1.22.4/tmac/ec.tmac
149              Macros to switch to EC fonts.
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BUGS

152       Dvi  files  produced  by grodvi use a different resolution (57816 units
153       per inch) from those produced  by  TeX.   Incorrectly  written  drivers
154       which  assume the resolution used by TeX, rather than using the resolu‐
155       tion specified in the DVI file will not work with grodvi.
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157       When using the -d option with boxed  tables,  vertical  and  horizontal
158       lines  can  sometimes  protrude by one pixel.  This is a consequence of
159       the way TeX requires that the heights and widths of rules be rounded.
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SEE ALSO

162       tfmtodit(1),   groff(1),   troff(1),    groff_out(5),    groff_font(5),
163       groff_char(7), groff_tmac(5)
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167groff 1.22.4                    19 January 2023                      GRODVI(1)
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