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