This file is where you configure your archivers, each section deals with a specific archiver, use *a for archive name *f for file list to pack and *d for destination directory. Users default archive type (the one used for offline mail) will default to the first defined archiver. Users can change archivers via the settings menu.
The file extension used to represent this archive type
The command to pack (for example, for info zip: zip -j *a *f)
The command to unpack (for example, for info zip: unzip -j -o *a -d *d)