RCRuiz make a blender patch for make a QuickDisplay when we move inside the 3d window,
I mean when you use ALT + Left Button Mouse (mouse with 2 buttons) or use the middle button of the mouse and move it.
the intention of this patch is that when you have a very heavy model and you have it in wiremode , for example, or other by activating the patch in bound box for said something you will be able, when you change the 3dview (rotating or panning) to change automatically the current mode to the bound box while you are rotating ONLY and then it will change back to the previous mode when this action is done . . . I also know the use of the “/” but for me is very useful see the position (relative)of the other objects on my scene . . . . . a simple test. . . if you create . .lets said 10 spheres and apply a subd 6 to all of them . . (depending on the machine) . . when you rotate or pan the view is getting difficile to manage . . . . when you use the path this is solve . . . . I hope that this explain the patch in a beater way
apparently broken close/rejected the patch (read the link of the patch)