Hi James, that's an interesting idea too, my first impression of that one is how weird it might look with some long German language text added in below there.

But you can get the behavior you are requesting right now though by modifying the default UI - if you replace the file ViewTabs.htm in the ui sub-folder with the attached version you should get that perspective/parallel toggling behavior. I didn't try to do the additional text labels here, let me know if that would help you and I can give that a try too.

The attached version has a new function TogglePerspective() added in and the 3D tab button element has been modified to call that function for the onmousedown event. I tested it only with the Aug-28-2018 v4 beta version.

- Michael