In the below paragraph of http://lilypond.org/freedom.html
" “Gift culture”: the Free Software movement has created many
great
software projects, such as GNU/Linux, Mozilla Firefox, and Battle for
Wesnoth. Having benefitted from these projects, some developers want
to “give back” to the community. "
"GNU/Linux" is a link to http://kernel.org, which is not correct
because GNU is the system and Linux is the kernel (more info[1]). How
about have "GNU" as a link to http://www.gnu.org and "Linux" as a link
to http://kernel.org?
[1] https://www.gnu.org/gnu/linux-and-gnu.html