Related Clues:

• 'Primary Colors' author, for short
• After
• Presently
• In a while
• Like most limericks, in short
• Like most graffiti: Abbr.
• By and by
• 'Ciao!'
• Prolific poet?
• 'Mr. X'
• Procrastinator's word
• See 42-Across
• Mr. X
• 'See ya'
• Bartlett's abbr.