1.1 --- a/src/Tools/isac/Knowledge/Equation.thy	Thu Dec 22 11:12:18 2016 +0100
     1.2 +++ b/src/Tools/isac/Knowledge/Equation.thy	Thu Dec 22 11:36:20 2016 +0100
     1.3 @@ -65,7 +65,7 @@
     1.4  
     1.5  ML{*
     1.6  (*.function for handling the cas-input "solve (x+1=2, x)":
     1.7 -   make a model which is already in ptree-internal format.*)
     1.8 +   make a model which is already in ctree-internal format.*)
     1.9  (* val (h,argl) = strip_comb (str2term "solve (x+1=2, x)");
    1.10     val (h,argl) = strip_comb ((Thm.term_of o the o (parse thy)) 
    1.11  				  "solveTest (x+1=2, x)");