What does dsfg as a part of package names mean?

I know the general format for package names in Debian and Ubuntu. Some packages have additions to the standard numbering scheme with obvious meaning like svn20090426 etc. But also quite a few packages have dsfg in their name (e.g. 2:1.0~rc4~try1.dsfg1-1ubuntu1) – what does that mean?

Is it just a typo of the Debian Free Software Guidelines (DFSG)?

Solution 1:

http://en.wikipedia.org/wiki/Debian_Free_Software_Guidelines

A package with 'dfsg'/'dsfg' suffix is one that has been stripped of any files that doesn't follow the Debian Free Software Guidelines.

(From Debian mailing list: http://lists.debian.org/debian-mentors/2010/08/msg00169.html)