Related Clues:

• Reply courtesy, briefly
• Ed.'s request
• Enclosure with a MS.
• Encl. with a submission
• Writer's Market abbr.
• Postpaid encl.
• Return mailer: Abbr.
• Paper size: Abbr.
• Letter encl.
• Inclusion with a MS.
• Part of SASE: Abbr.
• 8 1/2' x 11' size: Abbr.
• Missive: Abbr.
• Returned MS holder
• Sleep-inducing