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# NetBSD 6.1.5 - man page for grodvi (netbsd section 1)

```GRODVI(1)										GRODVI(1)

NAME
grodvi - convert groff output to TeX dvi format

SYNOPSIS
grodvi [ -dlv ] [ -Fdir ] [ -ppapersize ] [ -wn ] [ 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   in
/usr/share/tmac/dvi.tmac.

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, -Tdvi	loads  pspic.tmac  automatically,  providing  the
PSPIC macro.  Please check groff_tmac(5) for a detailed description.

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.

By design, the DVI format doesn't care about physical dimensions  of  the  output  medium.
Instead,  grodvi  emits	the  equivalent  to TeX's \special{papersize=width,length} on the
first page; 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.

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.

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

-l     Specify landscape orientation.

-ppapersize
Specify  paper  dimensions.   This overrides the papersize, paperlength, and paper-
width commands in the DESC file; it accepts the same  arguments  as  the	papersize
command (see groff_font(5) for details).

-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.

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), SC (cmtex10, only for CW), 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 (which loads the file 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 ec.tmac must be called before	any  lan-
guage-specific files; it doesn't take care of hcode values.

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

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

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

/usr/share/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.