Possible Clues:

• 'Whoa, get in line!'
• 'Don't rush in!'
• 'Get in line, please!'
• Separation exhortation
• Cry to an unruly crowd near an entrance
• "Don't rush!"
• "Wait your turn!"
• 'Line up!'
• "Slow down, folks!"
• Shout to an unruly group