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Marks the specified button as an input. If an invalid button number is passed, false will be returned. If successful, the function returns true. Input buttons are tri-stated and can be driven high or low externally.
boolean ConfigureAsOutput (in unsigned long Button)
Marks the specified button as an output. If an invalid button number is passed, false will be returned. If successful, the function returns true. The output will be driven high or low depending on the current output state of the pin.
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