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what is rs on a xbox 360 controller
The right thumbstick is also referred to as the right analog or right stick (RS).
What does the right stick on the Xbox 360 Controller do?
Like its left counterpart, it can be used as a button.
Is there anything interesting about the Xbox 360 controller?
The Xbox 360 controller is the primary game controller for Microsoft's Xbox 360 home video game console.

Question: What else?
Self-contained rewrite: What else is interesting about the Xbox 360 controller?