val xpp = String.extract (xpp, 0, SOME (size xpp - 1))
val spaces = implode (List.tabulate (40 - size xpp, fn _ => #" ")) handle size => ""
val lpp = Liveness.prettyprint liv
val xpp = String.extract (xpp, 0, SOME (size xpp - 1))
val spaces = implode (List.tabulate (40 - size xpp, fn _ => #" ")) handle size => ""
val lpp = Liveness.prettyprint liv