Related Clues:

• Sartre's "No ___"
• Words on an arrow-shaped sign
• Data processing command
• Get in the game
• Long key
• Labyrinth goal
• Start, as school
• STEP OUT
• STEP IN
• Use a fire door
• Put in, as into a log
• Big key
• One way out
• Oft-used key
• Welcome sight in a maze