Reverse
The Reverse component flips the source curve horizontally relative to the center of the visible range of the source curve. This is a curve component, it can be located in the Curve Ops category on the Components Bar.
When turned on, the curve specified by the Source input is flipped horizontally. When turned off, the component has no effect.
Source: Curve Input, Required
Supplies the curve to be reversed. This is a required input – to make the Reverse component work, this input must be connected.