Select other pages to hyperlink to, from the RichText editor

I am very happy with the rich text editor because it allows me to create online manuals, and only my users can see them when logged in. So I'm in the process of making a lot of different pages, which have links to one another.

I want to make it easy to link from one information page to another.

Currently I need to go to the live app, go to the target page, copy the url, then paste that as a link inside the editor for the referring page.

It would be awesome (as well as kind of expected) if the rich text editor had its own dropdown list of other pages inside the same app, so that I could more easily make those links.

It would be awesome - we do something similar with an internal helpdesk.