Related Clues:

• Env. abbreviation
• Acknowledge an invitation
• Notation on an invitation
• Memo heading
• Invitation closer
• Say whether you'll attend
• Memo directive
• Plan to attend
• Tell the host yes or no
• Letters importuning reply
• 'Mayberry --'
• TV's 'Mayberry ___'
• Answer an invite
• Say you're coming
• Abbr. that may precede a colon