Using the mouse

click
drag

left

middle

right

Menu

 or  

Rotate X,Y

    

Translate X,Y

 Restore & center 

  

Rotate Z

Zoom

 or  

Front slab

 *    

Rear slab

 *    

Move slab

 *    
* These only work if previously activated with a slab on command;
if they fail on a Mac, try clicking first, then holding keys, then drag
Hover the mouse over icons for an explanation, or go to page