This modifier limits an output value to be within the range defined by the Min and Max values. Applying this modifier ensures that the output channel never has a value lower than the Min value or a value 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 passes the value from the input channel, but clamped by the minimum and maximum values.