Hi Michael, Thanks for the feedback. In designing the Tekla BIMsight UI we wanted to keep things as clean, simple and intuitive as possible. Part of that was to try and keep the 3D navigation as straightforward as possible - everything just with the mouse, no hidden/secrete shortcuts or special tricks, etc. So far the feedback has been generally positive to this approach. We were quite active during the development to test and check with a group of prospective users to check we were on track. We plan to continue this approach with future improvements and will certainly be looking at the navigation as we gather more feedback and ideas. Thanks Steve