I just tested it. It's pretty much non-existent. I'm pretty certain it's because I have to use it using Linux Mint's terminal, but the only thing I can do with the mouse is use it to jump the cursor around. Even if it did support full mouse usage though, I don't think I'd do it. I'm using it for the novelty (which is great so far, despite the limitations) so I have no problem using tab, shift-tab, "[" and "]" and page up and page down. It's part of the fun.
Edit: Though apparently you can use the scroll wheel. It kind of feels like cheating. :)