Hi Val, 
 
> wait, isn't that the same as Shift+Right Click? 
 
No, there isn't anything special for Shift + Right Click - that's the same as just a regular Right click with nothing added. 
 
Right click is used for a couple of different things - when in a command doing a Right click is a shortcut for pushing the "Done" button. When you're not in a command doing a Right click will repeat the last command. 
 
 
There is another option for window select though, which is if you hold down just the Ctrl key when doing a window select, that makes it a deselection window rather than a selection window. 
 
     - Michael 
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