Reline functionality

[BurdetteLamar]

I am looking at contributing to Reline documentation. I have been studying https://www.gnu.org/software/readline/ to guide my work. I understand that not all of the Gnu functionality is implemented in Reline.

Questions:

• May I reasonably regard Reline as a proper subset of Gnu Readline?
• If not, is Reline a proper subset of some other implementation?

Thanks,
Burdette