Take your cue

Posted by Lotg on October 23, 2003

And from the same book: "He sounded emotionless and professional. Jackpot too his cue and shut his mouth."

'Took his cue' obviously means took the hint, got the message, etc. But why 'his cue'? Is this from the theatrical term? And if so, why a cue anyway?

• Take your cue R. Berg 23/October/03