Crossword clues for Abbreviation on a memo. 3 lettersAnswerClueFYIMemo abbreviationFYIAbbreviation on a memo.ATTNMemo abbreviation equivalent to "to" or "for," but longer than eitherINREMemo abbreviationASAPMemo abbreviationATTNMemo abbreviationATTNAbbreviation on a memo.ATTNAbbreviation at the top of a memo