Official Diplomatic Procedure or System of Rules
This page is the CodyCross answer for the clue below from Popcorn Time, Group 385, Puzzle 4 (Feature Length).
Question is: Official Diplomatic Procedure or System of Rules
and the answer is: PROTOCOL
Word Meaning:
PROTOCOL — (now chiefly historical) The minutes, or official record, of a negotiation or transaction; especially a document drawn up officially which forms the legal basis for subsequent agreements based on it.
Definitions from Wiktionary.