Hi Cliff,
On further consideration, I've decided GPL (same license
as the software) is most appropriate for new Maxima
project documents. (Of course, that says nothing about
documents which are not part of the project.)
GPL is a suitable document license since it has the
guarantees we'd like to see (copy/distribute original,
create and distribute derivative works), and it is not
limited to software (the GPL reads "This License
applies to any program or other work ...").
Making documents GPL also makes it possible to
cut-n-paste from a document into source code and vv.
That could happen often enough that I'd like to leave the
door open for it.
Any comments about using GPL as a document license?
All the best, and hope this helps,
Robert Dodier