src/Pure/Syntax/syntax_ext.ML

--- a/src/Pure/Syntax/syntax_ext.ML	Mon Sep 05 22:09:52 2016 +0200
+++ b/src/Pure/Syntax/syntax_ext.ML	Mon Sep 05 23:11:00 2016 +0200
@@ -183,8 +183,8 @@
   in props end;
 
 val get_string = get_property "" I;
-val get_bool = get_property false Markup.parse_bool;
-val get_nat = get_property 0 Markup.parse_nat;
+val get_bool = get_property false Value.parse_bool;
+val get_nat = get_property 0 Value.parse_nat;
 
 end;