Related Clues:

• Abbr. before a colon
• Routing letters
• 'Pronto'
• Order letters
• Right now, for short
• Memo letters for "I need it now!"
• 'This minute!'
• Right away, in memos
• Abbr. on a memo
• Abbr. on a business envelope, perhaps
• Bus.-letter letters
• 'The faster the better'
• "Now!"
• Directly, briefly
• Abbr. on envelopes