Provided by: groff_1.22.4-8build1_amd64 
NAME
hpftodit - create font description files for use with groff -Tlj4
SYNOPSIS
hpftodit [-aqs] [-i n] tfm-file map-file output-font
hpftodit -d tfm-file [map-file]
hpftodit --help
hpftodit -v
hpftodit --version
DESCRIPTION
hpftodit creates a font file for use with a Hewlett-Packard LaserJet 4-series (or newer) printer with
groff -Tlj4, using data from an HP tagged font metric (TFM) file. tfm-file is the name of the TFM file
for the font; Intellifont and TrueType TFM files are supported, but symbol set TFM files are not. map-
file is a file giving the groff names for characters in the font; this file should consist of a sequence
of lines of the form:
m u c1 c2 ... [# comment]
where m is a decimal integer giving the MSL (Master Symbol List) number of the character, u is a
hexadecimal integer giving the Unicode value of the character, and c1, c2, ... are the groff names of
the character (see groff_char(7) for a list). The values can be separated by any whitespace; the Unicode
value must use uppercase digits A–F, and must be without a leading ‘0x’, ‘u’, or ‘U+’. Unicode values
corresponding to composite glyphs are decomposed; e.g., ‘u00C0’ becomes ‘u0041_0300’. The name for a
glyph without a groff name may be given as uXXXX if the glyph corresponds to a Unicode value, or as an
unnamed glyph ‘---’. If the given Unicode value is in the Private Use Area (0xE000–0xF8FF), the glyph is
included as an unnamed glyph. Refer to groff_diff(1) for additional information about unnamed glyphs and
how to access them.
Blank lines and lines beginning with ‘#’ are ignored. A ‘#’ following one or more groff names begins a
comment. Because ‘#’ is a valid groff name, it must appear first in a list of groff names if a comment
is included, e.g.,
3 0023 # # number sign
or
3 0023 # sh # number sign
rather than
3 0023 sh # # number sign
which will treat the first ‘#’ as the beginning of the comment.
The groff font file is written to the specified output-font; if this operand is ‘-’, the font file is
written to the standard output.
The -s option should be given if the font is special (a font is “special” if groff should search it
whenever a character is not found in the current font). If the font is special, it should be listed in
the fonts command in the DESC file; if it is not special, there is no need to list it, since groff can
automatically mount it when it's first used.
If the -i option is used, hpftodit automatically will 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)).
OPTIONS
-a Include characters in the TFM file that are not included in map-file. A glyph with corresponding
Unicode value is given the name uXXXX; a glyph without a Unicode value is included as an unnamed
glyph ‘---’. A glyph with a Unicode value in the Private Use Area (0xE000–0xF8FF) also is
included as an unnamed glyph.
This option provides a simple means of adding Unicode-named and unnamed glyphs to a font without
including them in the map file, but it affords little control over which glyphs are placed in a
regular font and which are placed in a special font. The presence or absence of the -s option has
some effect on which glyphs are included: without the -s option, only the “text” symbol sets are
searched for matching glyphs; with the -s option, only the “mathematical” symbol sets are
searched. Nonetheless, restricting the symbol sets searched isn't very selective—many glyphs are
placed in both regular and special fonts. Normally, the -a option should be used only as a last
resort.
-d Dump information about the TFM file to the standard output; this option can be useful for ensuring
that a TFM file is a proper match for a font, and that the contents of the TFM file are suitable.
The information includes the values of important TFM tags, and a listing (by MSL number for
Intellifont TFM files or by Unicode value for TrueType TFM files) of the glyphs included in the
TFM file. The unit of measure ‘DU’ for some tags indicates design units; there are 8782 design
units per em for Intellifont fonts, and 2048 design units per em for TrueType fonts. Note that
the accessibility of a glyph depends on its inclusion in a symbol set; some TFM files list many
glyphs but only a few symbol sets.
The glyph listing includes the glyph index within the TFM file, the MSL or Unicode value, and the
symbol set and character code that will be used to print the glyph. If map-file is given, groff
names are given for matching glyphs. If only the glyph index and MSL or Unicode value are given,
the glyph does not appear in any supported symbol set and cannot be printed.
With the -d option, map-file is optional, and output-font is ignored if given.
-q Suppress warnings about characters in the map file that were not found in the TFM file. Warnings
never are given for unnamed glyphs or by glyphs named by their Unicode values. This option is
useful when sending the output of hpftodit to the standard output.
-v Print the hpftodit version number and exit.
-s The font is special. This option adds the special command to the font file, and affects the order
in which HP symbol sets are searched for each glyph. Without the -s option, the “text” sets are
searched before the “mathematical” symbol sets. With the -s option, the search order is reversed.
-in 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.
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.
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.
This option normally is needed only with italic or oblique fonts; a value of 50 (0.05 em) usually
is a reasonable choice.
FILES
/usr/share/groff/1.22.4/font/devlj4/DESC
device description file
/usr/share/groff/1.22.4/font/devlj4/F
Font description file for font F
/usr/share/groff/1.22.4/font/devlj4/generate/*.map
symbol mapping files
SEE ALSO
groff(1), groff_diff(1), grolj4(1), groff_font(5), lj4_font(5)
groff 1.22.4 23 March 2022 HPFTODIT(1)