fold / unfold hierarchy of outline (toggles)

it would be great if there would be an easy (keyboard) way to toggle view of a page / note / document content to a certain hierarchy level.

– while the TOC in the sidebar is helpful for navigation and as cue, the handling of longer content – especially in an 'outline'-kind of mind state – would hugely benefit from that.

… and I think all ways to improve the way Capacities handles / tames large unruly text + data bodies is helpful. 🪷

(– actually, given the interest in outlining capabilities + comparison w/ other tools in this field I a little surprised such a simple fold view by level hasn´t been requested here already … 😄.)