[Python-Dev] NEWLINE sentinel behavior in CPython's PEG grammar

I am writing a Rust version of Python for fun and I am at the parser stage of development. I copied and modified a PEG grammar ruleset from another open source project and I've already noticed some problems (ex Newline vs NL) with how they transcribed things. I am suspecting that CPython's grammar NEWLINE is a builtin rule for the parser that is something like `(Newline+ | NL+ ) {NOP}` but wanted to sanity check if that is right before I figure out how to hack in a NEWLINE rule and update my grammar ruleset.