Flag to retain MD formatting in comments (%%%, maybe?)

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Comments are great...
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but I’m finding use cases where I want to hide information from reading view while retaining normal md formatting. I’m not seeing a plugin that allows this, but I know it’s possible to surround data and retain inner md formatting, like with custom callouts.

I’d love a settings flag to retain md formatting inside comments, or maybe %%% (instead of %%) could denote md-enabled comments. Thanks!

Hello.

What MD formatting doesn’t work? Can you give an example or two?