.TH addftinfo 1 "2 July 2023" "groff 1.23.0"
.SH Name
addftinfo \- add font metrics to
.I troff
fonts for use with
.I groff
.
.
.\" ====================================================================
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.\" ====================================================================
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.
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.\" ====================================================================
.SH Synopsis
.\" ====================================================================
.
.SY addftinfo
.RB [ \-asc\-height\~\c
.IR n ]
.RB [ \-body\-depth\~\c
.IR n ]
.RB [ \-body\-height\~\c
.IR n ]
.RB [ \-cap\-height\~\c
.IR n ]
.RB [ \-comma\-depth\~\c
.IR n ]
.RB [ \-desc\-depth\~\c
.IR n ]
.RB [ \-fig\-height\~\c
.IR n ]
.RB [ \-x\-height\~\c
.IR n ]
.I resolution
.I unit-width
.I font
.YS
.
.
.SY addftinfo
.B \-\-help
.YS
.
.
.SY addftinfo
.B \-v
.
.SY addftinfo
.B \-\-version
.YS
.
.
.\" ====================================================================
.SH Description
.\" ====================================================================
.
.I addftinfo
reads an
.RI AT&T \~troff
font description file
.IR font ,
adds additional font metric information required by
.\" We need the "GNU" below because the \% prefix might be empty.
.RI GNU \~\%troff (1),
and writes the combined result to the standard output.
.
The information added is derived from the font's existing parameters and
assumptions about traditional
.I troff
names for characters.
.
Among the font metrics added are the heights and depths of characters
(how far each extends vertically above and below the baseline).
.
The
.I resolution
and
.I unit-width
arguments should be the same as the corresponding parameters in the
.I DESC
file.
.
.I font
is the name of the file describing the font;
if
.I font
ends with
.RB \[lq] I \[rq],
the font is assumed to be oblique
(or italic).
.
.
.\" ====================================================================
.SH Options
.\" ====================================================================
.
.B \-\-help
displays a usage message,
while
.B \-v
and
.B \-\-version
show version information;
all exit afterward.
.
.
.P
All other options change parameters that are used to derive the heights
and depths.
.
Like the existing quantities in the font description file,
each
.RI value\~ n
is in
.I "scaled points,"
.RI inches/ resolution
for a font whose type size is
.IR unit-width ;
see
.MR groff_font 5 .
.
.
.TP
.BI \-asc\-height \~n
height of characters with ascenders,
such as \[lq]b\[rq],
\[lq]d\[rq],
or \[lq]l\[rq]
.
.
.TP
.BI \-body\-depth \~n
depth of characters such as parentheses
.
.
.TP
.BI \-body\-height \~n
height of characters such as parentheses
.
.
.TP
.BI \-cap\-height \~n
height of uppercase letters such as \[lq]A\[rq]
.
.
.TP
.BI \-comma\-depth \~n
depth of a comma
.
.
.TP
.BI \-desc\-depth \~n
depth of characters with descenders,
such as \[lq]p\[rq],
\[lq]q\[rq],
or \[lq]y\[rq]
.
.
.TP
.B \-fig\-height
height of figures (numerals)
.
.
.TP
.BI \-x\-height \~n
height of lowercase letters without ascenders such as \[lq]x\[rq]
.
.
.P
.I addftinfo
makes no attempt to use the specified parameters to infer unspecified
parameters.
.
If a parameter is not specified,
the default will be used.
.
The defaults are chosen to produce reasonable values for a Times font.
.
.
.\" ====================================================================
.SH "See also"
.\" ====================================================================
.
.MR groff_font 5 ,
.MR groff 1 ,
.MR groff_char 7
.
.
.\" Restore compatibility mode (for, e.g., Solaris 10/11).
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.do rr *groff_addftinfo_1_man_C
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.
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