Saving/displaying content with h2/3 tags

In the 'Demo/Pad' tutorial saved notes are simple text, and only 'nl2br' filter is needed to display it the correct way.
I need my notes to have h2/h3 headers. What would be the correct way to achieve that?
Is there a filter something like {$note.content|safe} ? Or I should use [h2] instead
Code:

<h2>
? what filter should I apply then?

Please advise.

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