
Some examples of valid urls:

Simple install instructions:
apt:3ddesktop

Some additonal constrains:
apt:2vcard?minver=1.0
apt:owl,newbiedoc,python-pykaraoke?dist=gutsy
apt:python-pykaraoke?dist=gutsy,owl,newbiedoc
apt:cdda2wav?section=multiverse
apt:java?section=multiverse?section=universe
apt:adobe-flashplugin?channel=partner

Some basic substutions are also supported:
apt:adobe-flashplugin?channel=$distro-partner
apt:linux-restricted-modules-$kernel'
