When one have opened the OpenGL to view the house or whatever, there is one thing that could be better:
When the OpenGL window is opened - it is not possible to freeze the view - if you move the mouse, the house rotates, and it is not possible to move the mouse out of OpenGL window, for instance in order to open other programs.
To freeze the picture view it would be convenient to use left mouse (ML), as you then still can use right mouse (MR) for the functions to save picture etc. And if you want to un-freeze the picture - just ML again.
That is my idea and suggestion... 
