Related Clues:

• Urgent letters?
• 'Rush!'
• Wasting no time
• Memo directive
• "I need it yesterday!" initials
• Very quickly
• Speedily, speedily
• Hex
• Promptly, on a memo
• PDQ
• "Don't dawdle!"
• "Hurry up," on memos
• Letters of haste
• Brief period
• While