diff -r 9de1eb745aeb -r 5d208fd2507d src/Tools/Spec_Check/Examples.thy
--- a/src/Tools/Spec_Check/Examples.thy	Thu Dec 31 21:46:31 2015 +0100
+++ b/src/Tools/Spec_Check/Examples.thy	Fri Jan 01 10:49:00 2016 +0100
@@ -2,82 +2,82 @@
 imports Spec_Check
 begin
 
-section {* List examples *}
+section \<open>List examples\<close>
 
-ML_command {*
+ML_command \<open>
 check_property "ALL xs. rev xs = xs";
-*}
+\<close>
 
-ML_command {*
+ML_command \<open>
 check_property "ALL xs. rev (rev xs) = xs";
-*}
+\<close>
 
 
-section {* AList Specification *}
+section \<open>AList Specification\<close>
 
-ML_command {*
+ML_command \<open>
 (* map_entry applies the function to the element *)
 check_property "ALL k f xs. AList.lookup (op =) (AList.map_entry (op =) k f xs) k = Option.map f (AList.lookup (op =) xs k)";
-*}
+\<close>
 
-ML_command {*
+ML_command \<open>
 (* update always results in an entry *)
 check_property "ALL k v xs. AList.defined (op =) (AList.update (op =) (k, v) xs) k";
-*}
+\<close>
 
-ML_command {*
+ML_command \<open>
 (* update always writes the value *)
 check_property "ALL k v xs. AList.lookup (op =) (AList.update (op =) (k, v) xs) k = SOME v";
-*}
+\<close>
 
-ML_command {*
+ML_command \<open>
 (* default always results in an entry *)
 check_property "ALL k v xs. AList.defined (op =) (AList.default (op =) (k, v) xs) k";
-*}
+\<close>
 
-ML_command {*
+ML_command \<open>
 (* delete always removes the entry *)
 check_property "ALL k xs. not (AList.defined (op =) (AList.delete (op =) k xs) k)";
-*}
+\<close>
 
-ML_command {*
+ML_command \<open>
 (* default writes the entry iff it didn't exist *)
 check_property "ALL k v xs. (AList.lookup (op =) (AList.default (op =) (k, v) xs) k = (if AList.defined (op =) xs k then AList.lookup (op =) xs k else SOME v))";
-*}
+\<close>
 
-section {* Examples on Types and Terms *}
+section \<open>Examples on Types and Terms\<close>
 
-ML_command {*
+ML_command \<open>
 check_property "ALL f g t. map_types (g o f) t = (map_types f o map_types g) t";
-*}
+\<close>
 
-ML_command {*
+ML_command \<open>
 check_property "ALL f g t. map_types (f o g) t = (map_types f o map_types g) t";
-*}
+\<close>
 
 
-text {* One would think this holds: *}
+text \<open>One would think this holds:\<close>
 
-ML_command {*
+ML_command \<open>
 check_property "ALL t ts. strip_comb (list_comb (t, ts)) = (t, ts)"
-*}
+\<close>
 
-text {* But it only holds with this precondition: *}
+text \<open>But it only holds with this precondition:\<close>
 
-ML_command {*
+ML_command \<open>
 check_property "ALL t ts. case t of _ $ _ => true | _ => strip_comb (list_comb (t, ts)) = (t, ts)"
-*}
+\<close>
 
-section {* Some surprises *}
+section \<open>Some surprises\<close>
 
-ML_command {*
+ML_command \<open>
 check_property "ALL Ts t. type_of1 (Ts, t) = fastype_of1 (Ts, t)"
-*}
+\<close>
 
 
-ML_command {*
+ML_command \<open>
 val thy = @{theory};
 check_property "ALL t u. if Pattern.matches thy (t, u) then Term.could_unify (t, u) else true"
-*}
+\<close>
 
 end