Clues are important snippets of game information for the GM to drop every now and then. Make sure you have lots of clues, because most of them will go completely unnoticed.
R2-D2: Hey, wait just a second!
R2-D2: These pigs say we stole their ship.
C-3PO: So? You stole their ship.
R2-D2: I stole their ship on Endor. They're Kaminoan clone pigs. What were they doing on Endor?
Luke: What does it matter? It's probably just a coincidence.
R2-D2: No, this is important. It's a clue.
Miss Piggy: Psst, Luke. I've been investigating. They were on some sort of mission.
C-3PO: What were you doing on Endor?
Julius Strangepork: Just... on vacation. Going wild, living high on the—
Link Hogthrob: Oink!