Is your feature request related to a problem? Please describe.

Some officially supported Python Markdown extensions (like admonition use non-standard Markdown syntax. These cases are not properly handled by the parser currently. For example:

# Some title

!!! note
This will render as a tooltip box.

Back to normal markdown content.

Describe the solution you'd like

It would be useful if there was an "ignore" comment that could be added to a markdown file to skip formatting specific sections. The prettier library uses <!-- prettier-ignore --> and <!-- prettier-ignore-end --> for this purpose.

Describe alternatives you've considered

Plugins could be written for to handle cases like this, but it would be useful if there was a global way to disable formatting in specific sections of a document.

Additional context

It looks like there's a similar discussion happening on an existing PR about how to ignore blocks of code. I'd be fine with a solution where I could wrap certain sections in a div that sets a class that's globally ignored, but I feel like a plain comment would be a better interface for this use case, as it wouldn't require modifying the AST of the markdown.