diff -r 4cf4bbc25267 -r 5c44de6aadf4 src/HOL/ROOT.ML
--- a/src/HOL/ROOT.ML	Sat Dec 16 21:43:28 2000 +0100
+++ b/src/HOL/ROOT.ML	Mon Dec 18 12:21:54 2000 +0100
@@ -34,6 +34,7 @@
 use "~~/src/Provers/Arith/cancel_numerals.ML";
 use "~~/src/Provers/Arith/combine_numerals.ML";
 use "~~/src/Provers/Arith/cancel_numeral_factor.ML";
+use "~~/src/Provers/Arith/extract_common_term.ML";
 
 with_path "Integ" use_thy "Main";