Related Clues:

• Give cue to forgetful actor
• Assist to remember
• Always on time
• Give hint as to actor who has forgotten lines (6)
• Help forgetful actor with lines
• With little or no delay
• Cue given to a performer
• Cause to remember
• Punctual or timely
• Jog memory, cause to think of
• Whisper lines to forgetful actor
• Whisper line to forgetful actor
• Quick, without delay
• Supply a forgotten line to an actor
• This might remind you of what to do in 17 down