In word processing apps, users can create documents in outline mode, which allows them to collapse or expand sections of the document. You could have a very long document that collapses down to headers viewable on one screen. Then you can drill down into any header to see the content in that part of the note.
Done Suggested by: Joe • Upvoted: 28 Dec, '20 • Comments: 3
Isn't this already covered by "Formatting supported > Bullet List > Nested Bullet List > Foldable Bullet List"? OneNote and Workflowy work on this basis.
@Ronak, the only relevant difference I see is through the fact that some apps could support folding list items but not headings.
Updated the "Foldable headers" feature so it includes "Outline mode" as a parenthetical to help people Ctrl-F to find this feature. As noted above, we now have features for collapsible list items and headers.