Crossword clues for PC key not used by itself:ALTPC key used with F4PGUPPC key used in navigationESCPC key used to leave full-screen modeESCOft-used PC keyCTRLPC key used in combinationsPGUPPC key used for scrollingCTRLPC key used with Alt and DeleteESCLesser-used PC keyALTPC key used in combinationsCTRLPC key not used by itselfALTKey used in PC combinations