What does GFDL do?
> If the GPL were used, it would have to be accompanied by 6 pages
> of additional invariant material. That is still bigger than the
> reference card. Do you object to the GPL on these grounds?
There's a critical difference here. The GPL can accompany the
reference card. The invariant material must be in the reference card.
I explained months ago, and again last week, why this is not so.
A similar issue has come up recently on -devel regarding single files
downloaded out of a tarball or a cvs repository. Hopefully it's clear
that making the license available by reference is sufficient to allow
people to download single files from a cvs repository.
"Making the license available by reference" does not satisfy the GPL.
The GPL must accompany the GPL-covered materials. Access to the
program as a collection of files, in such a way that the user might
copy just part, is acceptable as long as you do not encourage people
to copy less than the whole that includes the GPL.