* Editing a note grows sluggish if it grows larger than 1.5KB or so. Either
  use smaller notes (I haven't seen any slowdowns with lots of notes on the
  surface) or maximize large notes when editing them.

* Clicking on a note while editing it sometimes moves the cursor off screen
  above the viewport, disabling further edits. Workarounds:
  - Press `ctrl+e` twice to leave and reenter edit mode on the same note. This
    will reposition the cursor within the viewport.
  - Pan the surface with the mouse to bring the top of the note is in view.

* Hyperlinks have some limitations. They can't contain spaces, and they aren't
  currently clickable if they wrap across lines.