--- trunk/libxmltv/Core/XMLTVConstants.cs	2013/03/08 02:13:59	36
+++ trunk/libxmltv/Core/XMLTVConstants.cs	2013/03/10 12:25:54	106
@@ -5,11 +5,14 @@
 
 namespace libxmltv.Core
 {
-    internal static class XMLTVConstants
+    public static class XMLTVConstants
     {
-        public const string ROOT_ELEMENT = "tv";
-        public const string CHANNEL_ELEMENT = "channel";
-        public const string PROGRAM_ELEMENT = "programme";
+        #region Root Constants
+        public static class Root
+        {
+            public const string RootElement = "tv";
+        }
+        #endregion
 
         #region Source Constants
         public static class Source
@@ -22,6 +25,7 @@
         #region Channel Constants
         public static class Channels
         {
+            public const string RootElement = "channel";
             public const string ChannelId = "id";
             public const string ChannelDisplayName = "display-name";
         }
@@ -29,13 +33,28 @@
         #region Program Constants
         public static class Programs
         {
+            public const string RootElement = "programme";
             public const string ProgramStart = "start";
             public const string ProgramStop = "stop";
-            public const string ProgramChannelId = CHANNEL_ELEMENT;
+            public const string ProgramChannelId = XMLTVConstants.Channels.RootElement;
             public const string ProgramTitle = "title";
             public const string ProgramSubTitle = "sub-title";
             public const string ProgramDescription = "desc";
+
+            #region extra meta-data
+            //public const string ProgramCredits = "credits";
+            //public const string ProgramDirector = "director";
+            //public const string ProgramActor = "actor";
+            //public const string ProgramDate = "date";
+            //public const string ProgramCategory = "category";
+            //public const string ProgramEpisodeNum = "episode-num";
+            //public const string ProgramPreviouslyShown = "previously-shown";
+            public const string ProgramExtraMetaData = "extras";
+            #endregion
         }
         #endregion
     }
 }
+
+
+