src/HOL/IMP/Com.thy

--- a/src/HOL/IMP/Com.thy	Fri Sep 20 19:07:10 2024 +0200
+++ b/src/HOL/IMP/Com.thy	Fri Sep 20 19:51:08 2024 +0200
@@ -4,9 +4,9 @@
 
 datatype
   com = SKIP 
-      | Assign vname aexp       ("_ ::= _" [1000, 61] 61)
-      | Seq    com  com         ("_;;/ _"  [60, 61] 60)
-      | If     bexp com com     ("(IF _/ THEN _/ ELSE _)"  [0, 0, 61] 61)
-      | While  bexp com         ("(WHILE _/ DO _)"  [0, 61] 61)
+      | Assign vname aexp       (\<open>_ ::= _\<close> [1000, 61] 61)
+      | Seq    com  com         (\<open>_;;/ _\<close>  [60, 61] 60)
+      | If     bexp com com     (\<open>(IF _/ THEN _/ ELSE _)\<close>  [0, 0, 61] 61)
+      | While  bexp com         (\<open>(WHILE _/ DO _)\<close>  [0, 61] 61)
 
 end