Is the editor Markdown-friendly?

Yes. Type Markdown and it formats live: # headings, **bold**, lists, - [ ] task checkboxes, quotes, and callouts. Notes export as clean Markdown too, so what you write stays portable.

You can also connect notes to each other: type [[ and an autocomplete offers your existing notes. A note-link opens its target with one click, and the outline panel plus find-in-note keep long documents navigable.