scenario {
	function "SystemFunction 2"
	function "SystemFunction 1"
	"SystemFunction 2" -> "SystemFunction 1" : "f1"
	alt "123" over "SystemFunction 2" "SystemFunction 1" {
		"SystemFunction 2" -> "SystemFunction 1" : "f2"
	} else "456" {
		"SystemFunction 1" -> "SystemFunction 2" : "fe1"
	}
}