@firewns says: “Do the terms ‘anuloma’ and ‘patiloma’ mean something with regards to PS?”
Yes, anuloma means regular or direct order or forward order while paṭiloma means the reverse; opposite; contrary; backward order in paṭiccasamuppāda.
You may want to read this article Vedanā in Paṭiccasamuppāda with reference to anuloma-paṭiccasamuppāda and paṭiloma-paṭiccasamuppāda.
With metta.