A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Single-click? No.
If you surround a piece of text with double-brackets ("[[text]]") OneNote will automatically create a link to the section or page with that text as its name (and if not will create a page in the current section with that name). Of course, then you don't have a mutual link, yet, just a one-way link.