Next: fonttext.cfg Up: Configuring the LATEX format Previous: Configuring the LATEX format

## Font configuration

Before you even think about configuring the font declarations by producing a file `fontmath.cfg` or `fonttext.cfg`, you should read the documented file `fontdef.dtx`. This is the source file from which the default files `fonttext.ltx` and `fontmath.ltx` are produced; it contains information concerning the contents of the default files and what sort of customisation is possible. In particular, it describes in detail the effects of individual customisations on document portability including: which customisations can be made without endangering the ability to exchange documents with other sites (even if the formatting differs); and which things should be left untouched because they will make your system so different from others that the documents it produces will be non-portable.

WARNING Please note that use of either of these font configuration files has the following consequences.

- Since the content of the file `fontdef.dtx` might change in the future, anyone writing a font configuration file must be prepared to update it for use with future releases.
- Documents produced on your system are likely, at best, to be portable only in the sense of being processable at a different site--the actual formatting will not be the same if different fonts are used.
- The LATEX3 project team will not be able to support you in diagnosing problems if these cannot be reproduced with a format that does not use any configuration files.

Next: fonttext.cfg Up: Configuring the LATEX format Previous: Configuring the LATEX format