scrolling help request

[mikea]

	I am using the latest version of XENIX System V and I'm having
	a problem: I can't figure out how to scroll up and down
	while I'm reading a piece of mail! So, if the mail is
	longer than one screen, I can never see the top unless I
	print it. I know I'm probably just being stupid, i.e., 
	missing something incredibly obvious, but that's that.
	If anyone can help, I appreciate it.
	l