Defining custom actions

[Marco <netuse lavabit com>]

Hi!

Is there a way to add more actions to some file types additionally
to the predefined View, Open and Edit? I found the following snippet
on the web, but I have no idea how to access the custom defined
actions.

  regex/\.([Tt]ex|TEX|TeX)$
    Open=%var{EDITOR:vi} %f
    TeX this file=tex %f
    LaTeX this file=latex %f


Marco