Clamp--
The Clamp modifiers clamps an input value within the range defined by the Min and Max channels. Essentially ensuring that the output channel never outputs a number lower than the Min value or a number higher than the Max value.
Min: Determines the minimum output value of the Clamp operator.
Max: Determines the maximum output value of the Clamp operator.
Output: The 'Output' channel simply outputs the input channel, clamped between the minimum and maximum values.
