Yet it would be very convenient to be able to work with relative file paths (relative to the base), in addition to absolute paths.

Yes, it very usefull when browsing internet and making bookmarks in cintanotes. Than I know that all my bookmarks that I grab should be tagged "links" or "links/movie". And I just pressing CTRL+F12 on interested page and ta-da - i have a bookmark in cinta already labeled by certain tag. (Also would be great to make (optionally) "silent" grab of the sellected text/page to cinta)

Great feature! It also woud be great to add more command line functionality. For example, to search thru notes with regex.