Chapter 5. Advanced Topics
| Part I. User Guide |

## Chapter 5. Advanced Topics

## Managing Font Map Files

Information about outline fonts is stored in a file by the name of `psfonts.map`. This file is created in the course of the setup/update process. It can be manually created by running `initexmf --mkmaps`.

`psfonts.map` depends on the file `updmap.cfg`. This configuration file contains declarative instructions (see updmap.cfg(5)), which will be used to build `psfonts.map`.

| Caution
The contents of `psfonts.map` should never be edited directly. Your modifications get lost when you install new packages.

For example, follow these steps if you want to add an entry for the font map file `xyz.map`:

1. Run `initexmf --edit-config-file updmap`.

2. Insert the following line at the end of the file:

       Map xyz.map

3. Save the file and close the editor.

4. Run `initexmf --mkmaps` to rebuild the font map files.

Integrating Local Additions |  | Working With the Package Manager