public delegate void ChangeAreaDelegate(
	double A_0,
	double A_1,
	double A_2,
	double A_3
)

Public Delegate Sub ChangeAreaDelegate ( 
	A_0 As Double,
	A_1 As Double,
	A_2 As Double,
	A_3 As Double
)

public delegate void ChangeAreaDelegate(
	double A_0, 
	double A_1, 
	double A_2, 
	double A_3
)

type ChangeAreaDelegate = 
    delegate of 
        A_0 : float * 
        A_1 : float * 
        A_2 : float * 
        A_3 : float -> unit