The term 'THEATER SIGN' is composed of three crossword solutions: EXIT (4 letters), MARQUEE (7 letters), and SRO (3 letters). EXIT is a sign that is typically found at the entrance or EXIT of a theater, indicating the direction of the EXIT. MARQUEE is a large sign that is usually placed above the entrance of a theater, displaying the name of the theater and the current show. SRO stands for 'Standing Room Only, ' which is a sign that is used to indicate that all of the seats in the theater are taken and that people must stand if they wish to watch the show.