```GRODVI(1)							     GRODVI(1)

NAME
grodvi - convert groff output to TeX dvi format

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

It is possible to have whitespace between a command line option and its
parameter.

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/share/groff/1.18.1.1/tmac/dvi.tmac; if the	 input
is    being    preprocessed    with    eqn    it	   will	  also	 input
/usr/share/groff/1.18.1.1/font/devdvi/eqnchar.

The dvi file generated by grodvi can be printed by any  correctly-writ-
ten 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 cur-
rent 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; any-
thing may not contain a newline.

For inclusion of EPS image files,  grodvi  loads	 pspic.tmac  automati-
cally,  providing  the  PSPIC  macro.   Please  check  grops  (1) for a
detailed description of this macro.

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

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.

The default color for \m and \M is black.  Currently, the drawing color
for \D commands is always black, and fill color values  are  translated
to gray.

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.	 Hori-
zontal 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.  If
this option isn't specified,  the	 line  thickness  defaults  to
0.04 em.

-Fdir  Prepend  directory  dir/devname  to the search path for font and
device description files; name is the name of the	 device,  usu-
ally dvi.

USAGE
There  are styles called R, I, B, and BI mounted at font positions 1 to
4.  The fonts are grouped into families T and H having members in  each
of these styles:

TR     CM Roman (cmr10)

TI     CM Text Italic (cmti10)

TB     CM Bold Extended Roman (cmbx10)

TBI    CM Bold Extended Text Italic (cmbxti10)

HR     CM Sans Serif (cmss10)

HI     CM Slanted Sans Serif (cmssi10)

HB     CM Sans Serif Bold Extended (cmssbx10)

HBI    CM Slanted Sans Serif Bold Extended (cmssbxo10)

There are also the following fonts which are not members of a family:

CW     CM Typewriter Text (cmtt10)

CWI    CM Italic Typewriter Text (cmitt10)

Special	fonts  are  MI (cmmi10), S (cmsy10), EX (cmex10), and, perhaps
surprisingly, TR, TI, and CW, due to the different  font	 encodings  of
text fonts.  For italic fonts, CWI is used instead of CW.

Finally,	 the  symbol  fonts  of	 the American Mathematical Society are
available as special fonts SA (msam10)  and  SB	(msbm10).   These  two
fonts are not mounted by default.

Using  the  option  -mec (loading the file ec.tmac) EC and TC fonts are
used.  The design of the EC family is very similar to that  of  the  CM
fonts; additionally, they give a much better coverage of groff symbols.
Note that ec.tmac must be called before any language-specific files; it
doesn't take care of hcode values.

FILES
/usr/share/groff/1.18.1.1/font/devdvi/DESC
Device description file.

/usr/share/groff/1.18.1.1/font/devdvi/F
Font description file for font F.

/usr/share/groff/1.18.1.1/tmac/dvi.tmac
Macros for use with grodvi.

/usr/share/groff/1.18.1.1/tmac/ec.tmac
Macros to switch to EC fonts.

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.