1.1 --- a/test/Tools/isac/Test_Isac_Short.thy	Fri Jan 17 13:14:11 2020 +0100
     1.2 +++ b/test/Tools/isac/Test_Isac_Short.thy	Fri Jan 17 13:47:19 2020 +0100
     1.3 @@ -202,7 +202,8 @@
     1.4    ML_file "MathEngBasic/mstools.sml"
     1.5    ML_file "MathEngBasic/specification-elems.sml"
     1.6    ML_file "MathEngBasic/tactic.sml"
     1.7 -  ML_file "MathEngBasic/ctree.sml"         (*!...!see(25)*)
     1.8 +  ML_file "MathEngBasic/ctree.sml"
     1.9 +  ML_file "MathEngBasic/calculation.sml"
    1.10  
    1.11    ML_file "Specify/ptyps.sml"         (* requires setup from ptyps.thy *)
    1.12    ML \<open>(*check_unsynchronized_ref (); ==== trick on error: CUT AND PASTE THIS LINE =========*)\<close>