If a Markdown with a long code, e.g as below, it's not limited to right cols, but span all pages. e.g. This note
really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code. really long code.
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