package main _plain
	package Main _code
		code
			inv !enableprinting
			inv !printnumber
				inv /main/doubler
					val 13
			inv !print
				val "!\n"
	package doubler _code
		local x
		code
			inv !jump
				lab .SkipWarning
			inv !print
				val "It'll get bigger!\n"
			.SkipWarning
			inv !store
				ref x
				inv !plus
					val x
					val x
			inv !return
				val x