Related Clues:

• Mail-routing abbr.
• Abbr. before a name on top of a memo
• Routing aid: Abbr.
• Fax cover sheet abbr.
• Business memo abbr.
• Letters in a bus. letter
• Business-env. letters
• 'Eyes only' abbr.
• Business envelope abbr
• Memo abbr
• Envelope abbr
• E-mail heading: Abbr
• Memo-directing abbr
• Top-of-memo abbr
• FYI relative