I was reading Endgame by Frank Brady (Page157) on Bobby Fischer and came across the following paragraph,
The Bureau obviously had trouble believing that someone would travel so much simply for the purpose of playing chess, especially to countries that were restricted for political reasons. A notice in Bobby's FBI file states that his passport was 'not valid for travel to Albania, Cuba, and those portions of China, Korea and Vietnam under communist control', and it contains a 1965 memorandum from the Office of the Coordinator of Cuban Affairs which advises that 'Cuban travel criteria make no provision for validation for the purpose of participating in chess competitions'.
According to the WorldReference dictionary, the closest matching definition I can find is 'a clause in a legal instrument, a law, etc., providing for a particular matter; stipulation; proviso'. Is it what it means in this text? I'm not sure.