textual works with publishing restrictions.

[Ed Boraas <ed@tao.ca>]

I ran across a text document the other day that is distributed under the
GPL, with the exception that it may not be published in print form without
the authors' permission. Is this still DFSG-free? They allow for people to
sell it on CD/disk, for example. It also allows distribution of derived
works under the same license. So, it definitely fits points 2-10 of the
DFSG, and seems to support point 1:

The license of a Debian component may not restrict any party from selling 
or giving away the software as a component of an aggregate software 
distribution containing programs from several different sources. The
license may not require a royalty or other fee for such sale.

Since any electronic versions of the document are fully under the
conditions of the GPL.

I've seen a number of manuals and such under similar licenses (although
not explicitly as GPL + exception). What do you guys think? Is it
DFSG-Free?

Yours,
ed boraas (ed@debian.org)