GRODVI(1)                                                            GRODVI(1)



NAME
       grodvi - convert groff output to TeX dvi format

SYNOPSIS
       grodvi [-dv ] [ -wn ] [ -Fdir ] [ files...]

DESCRIPTION
       grodvi is a driver for groff that produces TeX dvi format.  Normally it
       should be run by groff -Tdvi. This will run troff -Tdvi; it will also
       input the macros /usr/local/share/tmac/tmac.dvi; if the input is being
       preprocessed with eqn it will also input
       /usr/local/share/groff_font/devdvi/eqnchar.

       The dvi file generated by grodvi can be printed by any
       correctly-written dvi driver.  The troff drawing primitives are
       implemented using the tpic version 2 specials.  If the driver does not
       support these, the \D commands will not produce any output.

       There is an additional drawing command available:

       \D'R dh dv'
              Draw a rule (solid black rectangle), with one corner at the
              current position, and the diagonally opposite corner at the
              current position +(dh,dv). Afterwards the current position will
              be at the opposite corner.  This produces a rule in the dvi file
              and so can be printed even with a driver that does not support
              the tpic specials unlike the other \D commands.

       The groff command \X'anything' is translated into the same command in
       the dvi file as would be produced by \special{anything} in TeX;
       anything may not contain a newline.

       Font files for grodvi can be created from tfm files using tfmtodit(1).
       The font description file should contain the following additional
       commands:

       internalname name
              The name of the tfm file (without the .tfm extension) is name.

       checksum n
              The checksum in the tfm file is n.

       designsize n
              The designsize in the tfm file is n.

       These are automatically generated by tfmtodit.

       In troff the \N escape sequence can be used to access characters by
       their position in the corresponding tfm file; all characters in the tfm
       file can be accessed this way.

OPTIONS
       -d     Do not use tpic specials to implement drawing commands.
              Horizontal and vertical lines will be implemented by rules.
              Other drawing commands will be ignored.

       -v     Print the version number.

       -wn    Set the default line thickness to n thousandths of an em.

       -Fdir  Search directory dir/devdvi for font and device description
              files.

FILES
       /usr/local/share/groff_font/devdvi/DESC
              Device description file.

       /usr/local/share/groff_font/devdvi/ F
              Font description file for font F.

       /usr/local/share/tmac/tmac.dvi
              Macros for use with grodvi.

BUGS
       Dvi files produced by grodvi use a different resolution (57816 units
       per inch) to those produced by TeX.  Incorrectly written drivers which
       assume the resolution used by TeX, rather than using the resolution
       specified in the dvi file will not work with grodvi.

       When using the -d option with boxed tables, vertical and horizontal
       lines can sometimes protrude by one pixel.  This is a consequence of
       the way TeX requires that the heights and widths of rules be rounded.

SEE ALSO
       tfmtodit(1), groff(1), troff(1), eqn(1), groff_out(5), groff_font(5),
       groff_char(7)



Groff Version 1.15                                                9 April 2000
