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HPFTODIT(1)                            General Commands Manual                           HPFTODIT(1)



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  lead‐
       ing  ‘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 pres‐
              ence 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 True‐
              Type 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 af‐
              fects 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 cor‐
              rection 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)