Related Clues:

• Admittance alert: abbr.
• Full-house sign
• Sign at a sellout
• Sign of a Broadway hit
• Broadway letters for a hit show
• B'way success letters, and title of this puzzle
• "No place to sit," on B'way
• Broadway letters
• HUD offering
• Notice for late ticket-buyers, maybe
• ''Sold out'' letters
• "No seats left" sign
• Sign at a smash
• This sign goes up ...
• Box office warning, briefly