Provided by: groff_1.21-7_amd64 bug

NAME

       hpftodit - create font description files for use with groff -Tlj4

SYNOPSIS

       hpftodit [ -adqsv ] [ -in ] tfm_file map_file font

       It is possible to have whitespace between the -i option and its parameter.

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 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.  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.

       font  is the name of the groff font file.  The groff font file is written to font; if font
       is specified as `-', the output is written to the standard output.

       The -s option should be given if the font is special (a font is special  if  troff  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 troff 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 the 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 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.

       -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/1.21/font/devlj4/DESC            Device description file.

       /usr/share/groff/1.21/font/devlj4/F               Font description file for font F.

       /usr/share/groff/1.21/font/devlj4/generate/*.map  Symbol mapping files

SEE ALSO

       groff(1), groff_diff(1), grolj4(1), groff_font(5), lj4_font(5)