Related Clues:

• A Morse O has three
• Colon composition
• Ellipsis' three
• Marathons they're not
• Morse morsels
• Braille bits
• URL elements
• Parts of Web addresses
• Pixels, e.g.
• Only two alphabet letters have them
• A colon has two
• Polka __ (fabric pattern)
• They go with dashes
• Classic pencil-and-paper game
• F F F