Customize fonts

In LaTeX, there are nice packages allowing to switch fonts. Hence, for a simple
example we change the mode of the default texrunner instance to LaTeX and use
the `preamble` method to load the `times` package. ...

!! In general, it is also favourable to employ LaTeX when using your own Type1
fonts. Still you can also use different fonts in plain TeX if you are familiar
with the topic. However, LaTeX's NFSS (new font selection scheme) is preferable
for the ordinary user and has great advantages in daily use. All you need to do
is to integrate the fonts into your LaTeX system. PyX and LaTeX both require
a font map file containing the specification and the names of the font files.
Probably you will need to create your own LaTeX font adaptation, where the
`fontinst` utility is of great help. Try your favorite search engine on that
topic to learn more about it and find some step by step guides. As soon as
your LaTeX system is configured to use your fonts, they will also be available
to PyX.

!! The `times` package loads the Times New Roman and the Helvetica fonts, which
are part of any valid Acrobat Reader and Ghostscript installation. These fonts
are therefore not explicitly included in the output of PyX. This behaviour is
<> from LaTeX, where these standard 35 fonts usually are not contained in the
standard font-map file `psfonts.map`.
If you say in the PyX configuration file

    psfontmaps = psfonts.map download35.map
    pdffontmaps = pdftex.map download35.map

then PyX finds the corresponding fonts in the map-file and includes the fonts
in the output EPS and PDF files.
