Related Clues:

• Misbehave (with "up")
• When the lights dim
• Clean Air, e.g.
• Cleanup target?
• Play one's part
• Dramatic opening
• House work
• With 62-Down, be demure
• Make a decision
• Curtain raiser
• Perfor-mance
• Be a 15-Across
• Play subdivision
• Where a play starts
• Plot introducer