Related Clues:

• "Relax"
• 'Stop panicking!'
• Emergency directive?
• Make quiet or still - sounds like an order
• Render motionless from lack of wind
• Make still - sounds like an order
• Make quiet or still - that's an order?
• Keep motionless by lack of wind
• Don't get the wind up, perhaps
• Don't get the wind up!
• Make it so that it won't come to blows
• It might be like this to get no sale, by the sound of it
• Don't get the wind up and keep your cool
• Don't get the wind up, just came with the BL
• Still good advice to the excited