Available fonts ?:
\
emtex
\
texfonts
. E.g., fonts generated for
the HP LaserJet are stored in ?:
\
emtex
\
texfonts
\
laserjet
. The bitmapped fonts
are in `pk'-format and stored in subdirectories according to their resolution. E.g., a
10 points Computer Modern Roman font for a HP LaserJet (300 dpi) will be stored
as ?:
\
emtex
\
texfonts
\
laserjet
\
300dpi
\
cmr10.pk
.
However, fonts an also be stored in font libraries. The advantage of font libraries are:
.pk
files together.
The difference depends on the cluster size of your hard disk. The larger
the the cluster size, the greater the advantage of libraries.
laserjet
\
329dpi
) where fonts are to be found are automatically rounded,
so you will not need a directory called 464.49887dpi
simply because
MS-Dos doesn't allow such names. 465dpi
will do.
.pk
fonts are operating system independent. On other operating
system you may not find tools for managing font libraries so the font files
cannot be, e.g., copied from CD-rom to a Unix system and unpacked.fontlib.exe
program. Fontlib has
many parameters that are all documented in fontlib.doc
. The most important
fontlib commands are:
6.5.1 Commercial fonts
On the commercial market there are many fonts available.
Whatever commercial and/or public domain PostScript font you have, with the
help of the program ps2pk you can generate the PK files for every type of
printer. The PostScript fonts (.pfb
files) should be stored in the directory
?:
\
emtex
\
ps
\
fonts
(i.e. the environment variable PSFONTS
). See next section for
details on PostScript fonts.
TeX is famous for the excellence of its typesetting and especially the high quality or its mathematics. Most fonts families, however, do not have a special mathematical font and therefore mathematics is often set in Computer Modern. Very popular commercial PostScript fonts that have a mathematical font are the MathTimes fonts for Times (from TeXplorators Corporation) and the Lucida Bright fonts (from Bigelow & Holmes Inc.).
6.5.2 Using PostScript fonts
If you have access to a PostScript printer, you can use the DviPS program to
print a dvi-file, and use any internal or external PostScript font. You can still use
font libraries for any font you do not have in PostScript outline format, as
DviPS can read font libraries. But mostly you will use internal fonts such as
Times-Roman or Palatino. External fonts are usually stored as font outlines called
`Postscript Font Binary' (PFB), also called PostScript Type1. An alternative is
`Postscript Font Ascii' (PFA), also called PostScript Type3. PFBs and PFAs
contain identical information in binary (ascii 0-255) or ascii (ascii 32-127)
format. PFB can be translated into PFA and vice versa by PostScript utility
programs.
DviPS reads the file psfonts.map
from c:
\
texfiles
\
4system
to find out which
font file to include when printing a document using external fonts. An important
feature of PostScript fonts is scalability. PostScript fonts can be scaled to literally
any size. No more than one font needs to be loaded to achieve this, in contrast to
bitmapped fonts such as PK files. For every size you need to load another PK file.
Besides, PK files are specific for a given printer resolution--PostScript fonts are
not.
PostScript fonts can dowloaded partially by using a program called
Choosing different fonts can be done by means of loading packages in LaTeX or
`manually' in plain TeX. E.g., to typeset a document in PostScript Times-Roman you
specify times
as a package to be loaded. Note that the document can be printed
on a PostScript printer at any resolution, but it cannot be printed on a
LaserJet printer, unless you have bitmapped fonts available. 4TeX supports
all 35 standand PostScript fonts, thanks to the URW fonts supplied with
Ghostscript.
6.5.3 Automatic font generation
Metafont is a program for designing fonts for use by TeX. It interprets a drawing
language with a syntax that slightly resembles the Pascal programming
language. The input needed for Metafont can be interactive, or from a source file.
Metafont source files have the extension .mf
. The output of Metafont is a GF
(`generic font') file, extension .gf
, which contains the bitmap. This may be
compressed to a PK (`packed' font) file, extension .pk
, using the program
GFtoPK.
When compiling your document, TeX does not use the bitmap fonts but only the TFM files (`TeX Font Metrics'). The TFM files describe the dimensions, ligatures and kerns of the font. Metafont can make a TFM file as well as a bitmap font file.
A more detailed description of Metafont can be found in the book `The Metafont book' (Knuth (1986)).
When using the previewer or printer drivers, emTeX will look for correct
bitmap fonts in the font libraries (specified in the driver response file) or
somewhere on a specified path given by the environment variable DVIDRVFONTS
. If a
font can not be found, a substitution table (e.g.,
hplj.sub
) is used (see
Section 6.1.7).
4TeX can generate fonts on demand if you have set up your directories correctly
and specified FONTGEN=y
in your texuser.<os>
. Many DVI-drivers will pause when
one or more fonts are missing, asking you if you want to generate these fonts now.
You can get a list of missing fonts by entering [?], enter [N] to skip font generation,
or enter [Y] to start font generation.
Naturally, font generation is only possible if font rules are available. 4TeX supports
two types of font rules: Metafont (.mf
) and PostScript (.pfb
). Metafont must be
installed in the ?:
\
emtex
\
metafont
directory; PostScript font files must be installed
in directory ?:
\
emtex
\
ps
\
fonts
, along with the file psfonts.inf
that defines which
fonts are available and how .pk
files are to be generated from them, using the font
rasterizer ps2pk. You can also install your own PostScript font in a directory set by
the environment variable MYPSFONTS
in
texuser.<os>
. Likewise, you can also install
your own Metafont sources in a directory set by the environment variable MYMF
in
texuser.<os>
. Note that ps2pk will only run on computers equipped with a 80386
cpu or higher.
Bitmapped font files (.pk
) will be stored on the directory specified by the
environment variable MYFONTS
in
texuser.<os>
, e.g., MYFONTS=c:
\
texfiles
\
fonts
.
In order to make sure the DVI-drivers use the correct fonts for any printer selected,
4TeX puts font files in a subdirectory named after the current Metafont printer mode,
e.g., c:
\
texfiles
\
fonts
\
laserjet
. 4TeX uses the environment variable
PRINTER_MODE
set in the printer definition file to store fonts in the subdirectory of
MYFONTS
. (e.g., the printer definitions file
?:
\
emtex
\
prndest
\
hplj.prt
will set
PRINTER_MODE=LASERJET
and the fonts are stored in
c:
\
texfiles
\
fonts
\
laserjet
) In
this directory, font files are stored in subdirectories named after the resolution of the
fonts. For instance, if you need the font CMR10 at 20 points for a LaserJet III,
4TeX will generate c:
\
texfiles
\
fonts
\
laserjet
\
600dpi
\
cmr10.pk
, because the
font is twice as big as the standard 300 dpi resolution. Note that this font is not the
same as c:
\
texfiles
\
fonts
\
ljiv
\
600dpi
\
cmr10.pk
. The latter would be a 10
points font for a 600 dpi LaserJet 4.