After some effort, I just finished a new extensive document in the devguide regarding how
to use the new PEG parser and the PEG grammar:
The document contains descriptions, backgrounds, references, guides, and tips. Ideally,
this will make it a bit easier for everyone that wants to deal with the grammar or the parser.
Hope that you find it useful :)
P.S. Thanks to everyone that helped with the review!
Regards from cloudy London,
Pablo Galindo Salgado