Related Clues:

• Immediately after
• Coming from the factory, say
• Call to a queue
• Word to keep the line moving
• Call to the head of the line?
• All lined up, sort of
• Barber shop call
• Queue cue
• Counter call
• Call at a deli
• What one at the head of a line likes to hear
• Adjacent
• Deli counter call
• Deli call
• Boy ___ door