What's with the backslashes at the start of words in YAML doc files?

The problem:

Files like

contain text like this:

body: For backward compatibility, the post \format is extracted …

What’s with the backslash at the start of “format”?

I’m pulling out any backslashes that match /\s\\w/, but I’m wondering
the backslash is for. yaml.org has been down all day.


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