* John Hasler: >> What is this license? Where can it be found? Is it also problematic with >> respect to GPL-compatibility? > > On my Woody system I have an Emacs manual that contains this: > > This is the thirteenth edition of the `GNU Emacs Manual', updated for > Emacs version 20.7. > ... > ... > Permission is granted to copy and distribute modified versions of this > manual under the conditions for verbatim copying, provided also that the > sections entitled "The GNU Manifesto", "Distribution" and "GNU General > Public License" are included exactly as in the original, and provided > that the entire resulting derived work is distributed under the terms of > a permission notice identical to this one.
Even the Emacs 18 manual contained a similar permission notice (i.e. WITH invariant sections). I'm not sure what the copyright status of the XEmacs manual is, though.