Index: Source/cmConfigureFileCommand.h
===================================================================
RCS file: /cvsroot/CMake/CMake/Source/cmConfigureFileCommand.h,v
retrieving revision 1.22
diff -u -r1.22 cmConfigureFileCommand.h
--- Source/cmConfigureFileCommand.h	23 Jan 2008 15:27:59 -0000	1.22
+++ Source/cmConfigureFileCommand.h	18 Jun 2009 06:02:27 -0000
@@ -75,7 +75,9 @@
         "This is useful for configuring scripts that use ${VAR}. "
         "Any occurrences of #cmakedefine VAR will be replaced with "
         "either #define VAR or /* #undef VAR */ depending on "
-        "the setting of VAR in CMake";
+        "the setting of VAR in CMake. Any occurrences of #cmakedefine01 VAR "
+        "will be replace with either #define VAR 1 or #define VAR 0 "
+        "depending on whether VAR evaluates to TRUE or FALSE in CMake";
     }
 
   virtual void FinalPass();