Further to that point, on page 1065 under “Substantive Motions”, it says, “A substantive motion is a separate, self-contained motion.” I think Mr. Angus's motion fits that description quite well. It says, “It does not arise from another motion”—which also fits the description. “Generally, a substantive motion is debatable and amendable.”
It's quite clear based on the text found in House of Commons Procedure and Practice on page 1065 that what Mr. Angus said fits the very definition of what a substantive motion is. Therefore, it is debatable and is not a dilatory motion.