diff -r 396be15b95d5 -r 0b6aff7451b2 src/HOL/Library/Code_Char_chr.thy
--- a/src/HOL/Library/Code_Char_chr.thy	Mon Mar 23 08:14:23 2009 +0100
+++ b/src/HOL/Library/Code_Char_chr.thy	Mon Mar 23 08:14:24 2009 +0100
@@ -1,12 +1,11 @@
 (*  Title:      HOL/Library/Code_Char_chr.thy
-    ID:         $Id$
     Author:     Florian Haftmann
 *)
 
 header {* Code generation of pretty characters with character codes *}
 
 theory Code_Char_chr
-imports Plain Char_nat Code_Char Code_Integer
+imports Char_nat Code_Char Code_Integer Main
 begin
 
 definition