.TH GRODVI 1 "19 March 2021" "groff 1.22.4"
.SH NAME
grodvi \- convert groff output to TeX DVI format
.
.
.\" ====================================================================
.\" Legal Terms
.\" ====================================================================
.\"
.\" Copyright (C) 1989-2018 Free Software Foundation, Inc.
.\"
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.\" included in translations approved by the Free Software Foundation
.\" instead of in the original English.
.
.
.\" Save and disable compatibility mode (for, e.g., Solaris 10/11).
.do nr grodvi_C \n[.C]
.cp 0
.
.
.ie t .ds tx T\h'-.1667m'\v'.224m'E\v'-.224m'\h'-.125m'X
.el .ds tx TeX
.
.de FT
.  if '\\*(.T'dvi' .ft \\$1
..
.
.
.\" ====================================================================
.SH SYNOPSIS
.\" ====================================================================
.
.SY grodvi
.OP \-dl
.OP \-F dir
.OP \-p papersize
.OP \-w n
.RI [ file
\&.\|.\|.\&]
.YS
.
.SY grodvi
.B \-\-help
.YS
.
.SY grodvi
.B \-v
.SY grodvi
.B \-\-version
.YS
.
.
.\" ====================================================================
.SH DESCRIPTION
.\" ====================================================================
.
.B grodvi
is a driver for
.B groff
that produces \*(tx DVI format.
.
Normally it should be run by
.BR groff\ \-Tdvi .
.
This will run
.BR troff\ \-Tdvi ;
it will also input the macros in
.IR /usr/\:share/\:groff/\:1.22.4/\:tmac/\:dvi.tmac .
.
.LP
The DVI file generated by
.B 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
.B \[rs]D
commands will not produce any output.
.
.LP
There is an additional drawing command available:
.
.TP
.BI \[rs]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
.RI +( 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
.B \[rs]D
commands.
.
.LP
The groff command
.BI \[rs]X' anything '
is translated into the same command in the DVI file as would be
produced by
.BI \[rs]special{ anything }
in \*(tx;
.I anything
may not contain a newline.
.
.LP
For inclusion of EPS image files,
.B \-Tdvi
loads
.I pspic.tmac
automatically, providing the
.B PSPIC
macro.
.
Please check
.BR groff_tmac (5)
for a detailed description.
.
.LP
Font files for
.B grodvi
can be created from tfm files using
.BR tfmtodit (1).
.
The font description file should contain the following
additional commands:
.
.TP
.BI internalname\   name
The name of the tfm file (without the
.I .tfm
extension) is
.IR name .
.
.TP
.BI checksum\  n
The checksum in the tfm file is
.IR n .
.
.TP
.BI designsize\  n
The designsize in the tfm file is
.IR n .
.
.LP
These are automatically generated by
.B tfmtodit.
.
.LP
The default color for
.B \[rs]m
and
.B \[rs]M
is black.
.
Currently, the drawing color for
.B \[rs]D
commands is always black, and fill color values are translated to gray.
.
.LP
In
.B troff
the
.B \[rs]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.
.
.LP
By design, the DVI format doesn't care about physical dimensions of the
output medium.
.
Instead,
.B grodvi
emits the equivalent to \*[tx]'s
.BI \[rs]special{papersize= width , length }
on the first page;
.B dvips
(and possibly other DVI drivers) then sets the page size accordingly.
.
If either the page width or length is not positive, no papersize special
is output.
.
.
.\" ====================================================================
.SH OPTIONS
.\" ====================================================================
.
Whitespace is permitted between a command-line option and its argument.
.
.
.TP
.B \-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.
.
.TP
.BI \-F dir
Prepend directory
.RI dir /dev name
to the search path for font and device description files;
.I name
is the name of the device, usually
.BR dvi .
.
.TP
.B \-l
Specify landscape orientation.
.
.TP
.BI \-p papersize
Specify paper dimensions.
.
This overrides the
.BR papersize ,
.BR paperlength ,
and
.B paperwidth
commands in the
.I DESC
file; it accepts the same arguments as the
.B papersize
command (see
.BR groff_font (5)
for details).
.
.TP
.B \-v
Print the version number.
.
.TP
.BI \-w n
Set the default line thickness to
.I n
thousandths of an em.
.
If this option isn't specified, the line thickness defaults to
0.04\~em.
.
.
.\" ====================================================================
.SH USAGE
.\" ====================================================================
.
There are styles called
.BR R ,
.BR I ,
.BR B ,
and
.B BI
mounted at font positions 1 to\ 4.
The fonts are grouped into families
.B T
and
.B H
having members in each of these styles:
.
.RS
.TP
.B TR
.FT TR
CM Roman (cmr10)
.FT
.
.TQ
.B TI
.FT TI
CM Text Italic (cmti10)
.FT
.
.TQ
.B TB
.FT TB
CM Bold Extended Roman (cmbx10)
.FT
.
.TQ
.B TBI
.FT TBI
CM Bold Extended Text Italic (cmbxti10)
.FT
.
.TQ
.B HR
.FT HR
CM Sans Serif (cmss10)
.FT
.
.TQ
.B HI
.FT HI
CM Slanted Sans Serif (cmssi10)
.FT
.
.TQ
.B HB
.FT HB
CM Sans Serif Bold Extended (cmssbx10)
.FT
.
.TQ
.B HBI
.FT HBI
CM Slanted Sans Serif Bold Extended (cmssbxo10)
.FT
.RE
.
.LP
There are also the following fonts which are not members of a family:
.
.RS
.TP
.B CW
CM Typewriter Text (cmtt10)
.FT CW
.FT
.
.TQ
.B CWI
CM Italic Typewriter Text (cmitt10)
.FT CWI
.FT
.RE
.
.LP
Special fonts are
.B MI
(cmmi10),
.B S
(cmsy10),
.B EX
(cmex10),
.B SC
(cmtex10, only for
.BR CW ),
and, perhaps surprisingly,
.BR TR ,
.BR TI ,
and
.BR CW ,
due to the different font encodings of text fonts.
.
For italic fonts,
.B CWI
is used instead of
.BR CW .
.
.LP
Finally, the symbol fonts of the American Mathematical Society are available
as special fonts
.B SA
(msam10) and
.B SB
(msbm10).
.
These two fonts are not mounted by default.
.
.LP
Using the option
.B \-mec
(which loads the file
.IR ec.tmac )
provides the EC and TC fonts.
.
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
.I ec.tmac
must be called before any language-specific files; it doesn't take
care of hcode values.
.
.
.\" ====================================================================
.SH ENVIRONMENT
.\" ====================================================================
.
.TP
.I GROFF_FONT_PATH
A list of directories in which to search for the
.IR dev name
directory in addition to the default ones.
.
See
.BR troff (1)
and
.BR \%groff_font (5)
for more details.
.
.
.\" ====================================================================
.SH FILES
.\" ====================================================================
.
.TP
.I /usr/\:share/\:groff/\:1.22.4/\:font/devdvi/DESC
Device description file.
.
.TP
.IR /usr/\:share/\:groff/\:1.22.4/\:font/devdvi/ F
Font description file for font
.IR F .
.
.TP
.I /usr/\:share/\:groff/\:1.22.4/\:tmac/dvi.tmac
Macros for use with
.BR grodvi .
.
.TP
.I /usr/\:share/\:groff/\:1.22.4/\:tmac/ec.tmac
Macros to switch to EC fonts.
.
.
.\" ====================================================================
.SH BUGS
.\" ====================================================================
.
Dvi files produced by
.B grodvi
use a different resolution (57816 units per inch) from those produced by
\*(tx.
.
Incorrectly written drivers which assume the resolution used by \*(tx,
rather than using the resolution specified in the DVI file will not
work with
.BR grodvi .
.
.LP
When using the
.B \-d
option with boxed tables,
vertical and horizontal lines can sometimes protrude by one pixel.
.
This is a consequence of the way \*(tx requires that the heights
and widths of rules be rounded.
.
.
.\" ====================================================================
.SH "SEE ALSO"
.\" ====================================================================
.
.BR tfmtodit (1),
.BR groff (1),
.BR troff (1),
.BR groff_out (5),
.BR groff_font (5),
.BR groff_char (7),
.BR groff_tmac (5)
.
.
.\" Restore compatibility mode (for, e.g., Solaris 10/11).
.cp \n[grodvi_C]
.
.
.\" Local Variables:
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.\" vim: set filetype=groff: