doc-src/TutorialI/Rules/ROOT.ML

remove use of Polyhash;
the new code is slightly faster. Also, "subtract_cls" now has canonical argument ordering.

(* ID:         $Id$ *)
use_thy "Basic";
use_thy "Blast";
use_thy "Force";
use_thy "Forward";
use_thy "Tacticals";

use_thy "find2";