--- a/src/Pure/General/symbol.ML Fri Dec 21 12:38:30 2018 +0100
+++ b/src/Pure/General/symbol.ML Fri Dec 21 13:00:59 2018 +0100
@@ -1,7 +1,7 @@
(* Title: Pure/General/symbol.ML
Author: Makarius
-Generalized characters with infinitely many named symbols.
+Isabelle text symbols.
*)
signature SYMBOL =