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<A NAME="PAGENUM-1"><P>Page 1</P></A>
<H3><A NAME="ch01_ 1">
Part I:
</A></H3>
<H2>
User Commands
</H2>
<A NAME="PAGENUM-2"><P>Page 2</P></A>
<H3><A NAME="ch01_ 2">
Introduction
</A></H3>
<P>This section introduces and describes user commands.
</P>
<P><B>
AUTHORS
</B></P>
<P>Look at the header of the manual page for the author(s) and copyright conditions. Note that these can be different from
page to page.
</P>
<H3><A NAME="ch01_ 3">
addftinfo
</A></H3>
<P>addftinfo—Add information to troff font files for use with
groff
</P>
<B>
SYNOPSIS
</B>
<!-- CODE SNIP //-->
<PRE>
addftinfo [ _paramvalue... ] res unitwidth font
</PRE>
<!-- END CODE SNIP //-->
<P><B>
DESCRIPTION
</B></P>
<P>addftinfo reads a troff font file and adds some additional font-metric information that is used by the
groff system. The font file with the information added is written on the standard output. The information added is guessed using some
parametric information about the font and assumptions about the traditional
troff names for characters. The main information
added is the heights and depths of characters. The
res and unitwidth arguments should be the same as the corresponding
parameters in the DESC file; font is the name of the file describing the font; if
font ends with I, the font will be assumed to be italic.
</P>
<B><P>
OPTIONS
</B></P>
<P>Each of the f options changes one of the parameters that is used to derive the heights and depths. Like the existing
quantities in the font file, each value is in inches/res for a font whose point size is
unitwidth. param must be one of the following:
</P>
<TABLE>
<TR><TD>
x-height
</TD><TD>
The height of lowercase letters without ascenders such as x
</TD></TR><TR><TD>
fig-height
</TD><TD>
The height of figures (digits)
</TD></TR><TR><TD>
asc-height
</TD><TD>
The height of characters with ascenders, such as b, d, or l
</TD></TR><TR><TD>
body-height
</TD><TD>
The height of characters such as parentheses
</TD></TR><TR><TD>
cap-height
</TD><TD>
The height of uppercase letters such as A
</TD></TR><TR><TD>
comma-depth
</TD><TD>
The depth of a comma
</TD></TR><TR><TD>
desc-depth
</TD><TD>
The depth of characters with descenders, such as p, q, or y
</TD></TR><TR><TD>
body-depth
</TD><TD>
The depth of characters such as parentheses
</TD></TR></TABLE>
<P>addftinfo makes no attempt to use the specified parameters to guess the unspecified parameters. If a parameter is
not specified, the default will be used. The defaults are chosen to have the reasonable values for a Times font.</P>
<B>
<P>SEE ALSO</P>
</B>
<P>
font(5) groff_font(5), groff(1), groff_char(7)
</P>
<P>
Groff Version 1.09, 6 August 1992
</P>
<H3><A NAME="ch01_ 4">
afmtodit
</A></H3>
<!-- CODE SNIP //-->
<PRE>
afmtodit—Create font files for use with groff _Tps
</PRE>
<!-- END CODE SNIP //-->
<B>
<P>SYNOPSIS</P>
</B>
<!-- CODE SNIP //-->
<PRE>
afmtodit [ _ns ][_ddesc_file ][_eenc_file ][_in ][_an ] afm_file map_file font
</PRE>
<!-- END CODE SNIP //-->
<A NAME="PAGENUM-3"><P>Page 3</P></A>
<P>
<B>DESCRIPTION</B>
</P>
<P>afmtodit creates a font file for use with groff and
grops. afmtodit is written in Perl; you must have Perl version 3 installed
in order to run afmtodit. afm_file is the AFM (Adobe Font Metric) file for the font.
map_file is a file that says which groff character names map onto each PostScript character name; this file should contain a sequence of lines of the form:
</P>
<!-- CODE SNIP //-->
<PRE>
ps_char groff_char
</PRE>
<!-- END CODE SNIP //-->
<P>where ps_char is the PostScript name of the character and
groff_char is the groff name of the character (as used in the
groff font file.) The same ps_char can occur multiple times in the file; each
groff_char must occur, at most, once. font is the
groff name of the font. If a PostScript character is in the encoding to be used for the font but is not mentioned in
map_file, then afmtodit will put it in the groff font file as an unnamed character, which can be accessed by the
\N escape sequence in troff. The groff_font file will be output to a file called
font.
</P>
<P>If there is a downloadable font file for the font, it may be listed in the file
/usr/lib/groff/font/devps/download; see grops(1).
</P>
<P>If the _i option is used, afmtodit will automatically generate an italic correction, a left italic correction, and a
subscript correction for each character (the significance of these parameters is explained in
groff_font(5)); these parameters may be specified for individual characters by adding to the
afm_file lines of the form:
</P>
<!-- CODE SNIP //-->
<PRE>
italicCorrectionps charn
leftItalicCorrectionps charn
subscriptCorrectionps charn
</PRE>
<!-- END CODE SNIP //-->
<P>where ps_char is the PostScript name of the character, and
n is the desired value of the corresponding parameter in
thousandths of an em. These parameters are normally needed only for italic (or oblique) fonts.
</P>
<B>
<P>OPTIONS</P>
</B>
<TABLE>
<TR><TD>
_n
</TD><TD>
Don't output a ligatures command for this font. Use this with constant-width fonts.
</TD></TR><TR><TD>
_s
</TD><TD>
The font is special. The effect of this option is to add the special command to the font file.
</TD></TR><TR><TD>
_ddesc_file
</TD><TD>
The device description file is
desc_file rather than the default DESC.
</TD></TR><TR><TD>
_eenc_file
</TD><TD>
The PostScript font should be reencoded to use the encoding described in
enc_file. The format of enc_file is described in
grops(1).
</TD></TR><TR><TD>
_an
</TD><TD>
Use n as the slant parameter in the font file; this is used by
groff in the positioning of accents. By default,
afmtodit uses the negative of the ItalicAngle specified in the
afm_file; with true italic fonts, it is sometimes desirable to use a slant that is less than this. If you find that characters
from an italic font have accents placed too far to the right over them, then use the
_a option to give the font a smaller slant.
</TD></TR><TR><TD>
_in
</TD><TD>
Generate an italic correction for each character so that the character's width plus the
character's italic correction is equal to n thousandths of an em plus the amount by which the right edge of
the character's bounding is to the right of the character's origin. If this would result in a negative
italic correction, use a zero italic correction instead.
</TD></TR><TR><TD>
</TD><TD>
Also generate a subscript correction equal to the product of the tangent of the slant of the font
and four-fifths of the x-height of the font. If this would result in a subscript correction greater than
the italic correction, use a subscript correction equal to the italic correction instead.
</TD></TR><TR><TD>
</TD><TD>
Also generate a left italic correction for each character equal to n thousandths of an em plus
the amount by which the left edge of the character's bounding box is to the left of the
character's origin. The left italic correction may be negative.
</TD></TR><TR><TD>
</TD><TD>
This option is normally needed only with italic (or oblique) fonts. The font files distributed
with groff were created using an option of _i50 for italic fonts.
</TD></TR></TABLE>
<B>
<P>FILES</P>
</B>
<TABLE>
<TR><TD>
/usr/lib/groff/font/devps/DESC
</TD><TD>
Device description file
</TD></TR><TR><TD>
/usr/lib/groff/font/devps/F
</TD><TD>
Font description file for font F
</TD></TR><TR><TD>
/usr/lib/groff/font/devps/download
</TD><TD>
List of downloadable fonts
</TD></TR></TABLE>
<P><CENTER>
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