[Grml] Are grml packages initially installed by aptitude

Hi,

I'm just wondering, are grml packages initially installed by aptitude?

The reason that I'm asking is that after 'aptitude purge evms', I found the libevms-2.5 is still in the system.

Also, after 'aptitude purge shish', the dietlibc dietlibc-dev are still in the system.

I've never install those package myself, so I'm wondering how grml packages are initially installed.

thanks