|   TRACE=1;
  LIB "general.lib";
  sum(1..100);
==> entering sum (level 0)
==> entering   lsum (level 1)
==> entering     lsum (level 2)
==> entering       lsum (level 3)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> leaving        lsum (level 3)
==> entering       lsum (level 3)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> leaving        lsum (level 3)
==> leaving      lsum (level 2)
==> entering     lsum (level 2)
==> entering       lsum (level 3)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> leaving        lsum (level 3)
==> entering       lsum (level 3)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> leaving        lsum (level 3)
==> leaving      lsum (level 2)
==> leaving    lsum (level 1)
==> entering   lsum (level 1)
==> entering     lsum (level 2)
==> entering       lsum (level 3)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> leaving        lsum (level 3)
==> entering       lsum (level 3)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> leaving        lsum (level 3)
==> leaving      lsum (level 2)
==> entering     lsum (level 2)
==> entering       lsum (level 3)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> leaving        lsum (level 3)
==> entering       lsum (level 3)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> entering         lsum (level 4)
==> leaving          lsum (level 4)
==> leaving        lsum (level 3)
==> leaving      lsum (level 2)
==> leaving    lsum (level 1)
==> leaving  sum (level 0)
==> 5050
 |