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  1. No symbol - Wikipedia

  2. What is the origin of the "No Symbol"? - History Stack Exchange

  3. What is the proper name for a circle with a line through it?

  4. Prohibited Emoji - Emojipedia

  5. Prohibitory traffic sign - Wikipedia

  6. The No Symbol: The History Of The Red Circle-Slash - Tedium: …

  7. Make a ‘Stop’ circle / diagonal symbol in Word ... - Office Watch

  8. No symbol - Academic Kids

  9. X mark - Wikipedia

  10. The No Symbol: The History of the Red Circle-Slash - Hacker News