Related Clues:

• Ballot marks
• Crosses (out)
• Scoresheet marks
• Tic-tac-toe
• Tic-tac-toe line-up, perhaps
• Marks a ballot
•     Deletes, with 'out'
• Tic-tac-toe marks
• Marks (out)
• Frame fillers in a perfect bowling game
• Illiterates' signatures
• Marks a ballot
• Signs quickly
• Crosses out
• Some signatures