Related Clues:

• Something an 'o' lacks
• Sans -- (font style)
• Part of an 'i' or 'j'
• Multiplication sign, in math class
• Email punctuation
• 'Sunday in the Park With George' woman
• Last letter in Morse?
• Last letter in 'Morse code'
• Typography flourish
• Line at the end of a letter stroke
• Part of every email address
• Third of an ellipsis
• Mars from the vantage point of Earth, e.g
• Part of many an emoticon
• One of two in Pompeii