This comment displays with a box around some of the text.

Firefox and Safari both display it this way.

What is the markdown code to create such a box?


That's not markdown, but mis-rendered (La)TeX code.

To make MathJax render LaTeX code in math mode, you have to enclose the code between two $ signs. That comment was using two dollar signs for grawlixes, and since https://cs.stackexchange.com/ has MathJax "on", that's what you see.

  • 6
    Oh, thank you for introducing me to the word "grawlix". That alone was worth asking the question. – Kyle Jones Jul 25 '15 at 20:18

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