public delegate int DelegateParameterBacktrack(
	PlTerm term1,
	PlTerm term2,
	IntPtr control
)

Public Delegate Function DelegateParameterBacktrack ( _
	term1 As PlTerm, _
	term2 As PlTerm, _
	control As IntPtr _
) As Integer

public delegate int DelegateParameterBacktrack(
	PlTerm term1, 
	PlTerm term2, 
	IntPtr control
)