1.1 --- a/test/Tools/isac/Test_Isac_Short.thy	Tue Jul 27 11:21:14 2021 +0200
     1.2 +++ b/test/Tools/isac/Test_Isac_Short.thy	Tue Jul 27 12:32:43 2021 +0200
     1.3 @@ -301,7 +301,7 @@
     1.4    ML_file "Knowledge/calculus.sml"
     1.5    ML_file "Knowledge/trig.sml"
     1.6  (*ML_file "Knowledge/logexp.sml"    not included as stuff for presentation of authoring*) 
     1.7 -(*ML_file "Knowledge/diff.sml"     incomplete repair 2 * x \<up> - 2" --> 2 / x \<up> 2 | in Test_Some.thy*)
     1.8 +  ML_file "Knowledge/diff.sml"
     1.9  (*ML_file "Knowledge/integrate.sml"                rls simplify_Integral broken | in Test_Some.thy*)
    1.10  (*ML_file "Knowledge/eqsystem.sml"  simplify_System_parenthesized \<longrightarrow> - 0 + c_4 | in Test_Some.thy*)
    1.11    ML_file "Knowledge/test.sml"