float CombineFriction(
	float frictionA,
	float frictionB
)

Function CombineFriction ( 
	frictionA As Single,
	frictionB As Single
) As Single

float CombineFriction(
	float frictionA, 
	float frictionB
)

abstract CombineFriction : 
        frictionA : float32 * 
        frictionB : float32 -> float32