The action "Clear note"
(a) should be called "Remove Note", in detail
(i) remove, not clear
(ii) capitalize the title
(b) should ideally be active in the menu only when there indeed is a note to be removed.
The ideal position in menu of the menu bar is still unclear to me. I think it should go into Edit menu, below the "Remove node" item. It certainly is nothing like a dedicated tool, so its placement into Tools menu is misleading.