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llDetectedTouchBinormal

function ll.DetectedTouchBinormal(Index: number): vector

Returns the surface bi-normal for a triggered touch event.

Returns a vector that is the surface bi-normal (tangent to the surface) where the touch event was triggered.

Parameters
Index (number)
Index of detection information

Add example usage here showing SLua/Luau syntax with ll.DetectedTouchBinormal().

Add additional notes, caveats, or tips specific to using this function in SLua/Luau.