I'm new to Vue and there are a few things I can't work out about the interface. I'm sure there must be a way, but it isn't clear to me. 1) Selection. Suppose I have a cube inside another cube. I want to select the inner one with the mouse. How do I do it? I don't want to be driven to selecting it from the manifest, when I can see it in front of me (in wireframe view). 2) Rotation. When rotating things I usually want to rotate something 90 or 180 degrees, but I can't see any way to constrain Vue's rotation to whole degrees, and I don't want to have to type the rotation in. 3) Viewing panes. It often happens that I will have one viewing pane maximised and I want to switch quickly to another one (also maximised). I can't see any way to do this, and I find myself having to go through 4-pane view every time. Surely there must be hot keys for switching views? I just can't find them. These are the sorts of things that are often not very well documented, so I'm hoping someone can put me right.