Related Clues:

• Cole Porter's 'Let's --'
• Fiat
• Official proclamation
• Ordinance
• Authoritative decree
• Papal bull
• Sovereign decree
• 'Stop procrastinating!'
• King's decree
• "Get going!"
• Greek order of architecture
• A famous one was issued at Nantes
• Ruler's measure?
• 'Act!'
• Royal proclamation