Related Clues:

• Long speech
• Formal discourse
• Talk about
• Get to work on
• Eulogy, e.g.
• 10 Downing Street, e.g.
• It may begin with an exordium
• URL, e.g.
• Envelope marking
• Keynote, e.g.
• See 13 Down
• Information on an envelope
• Prepare to drive, as a golf ball
• One's postal residence.
• A long ceremonial speech