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# RedHat 9 (Linux i386) - man page for grodvi (redhat section 1)

```GRODVI(1)			     General Commands Manual				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/tmac/dvi.tmac; if the input is being preprocessed with eqn it will
also input /usr/share/groff/1.18.1/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 spe-
cials 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.

For  inclusion  of  EPS	image files, grodvi loads pspic.tmac automatically, 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  descrip-
tion 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.

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.  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.   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, usually 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

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 bet-
ter coverage of groff symbols.  Note that ec.tmac must be called before any  language-spe-
cific files; it doesn't take care of hcode values.

FILES
/usr/share/groff/1.18.1/font/devdvi/DESC
Device description file.

/usr/share/groff/1.18.1/font/devdvi/F
Font description file for font F.

/usr/share/groff/1.18.1/tmac/dvi.tmac
Macros for use with grodvi.

/usr/share/groff/1.18.1/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.