Markdown is simple in general. Over the years, however, I have observed two things that are surprisingly hard and many people have stumbled over them, including experts in my eyes.

1. How to write verbatim content, especially text that contains three backticks

This is the thing that tortures me weekly, if not daily, because without knowing how to write verbatim text, the Markdown output will be poorly formatted. It is not rare for me to see Github issues like this:

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