* Dmitry Bogatov <kact...@gnu.org>, 2015-12-07, 20:37:
As far as I know, GNU Make documentation lacks of invariant sections, but it is still in non-free.
This is confusing, but "invariant section" is not the same as "Invariant Section". Perhaps we should have invented a better name, such as "unmodifiable section".
The GNU Make Manual doesn't have Invariant Sections, but it does have Front-Cover Texts and Back-Cover Texts, which are unmodifiable ("invariant") sections. Because of this, make-doc is only available in non-free.
But complexity documentation is licensed under GFDL "with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts", so as per the GR it meets requirements of DFSG.
-- Jakub Wilk
