diff --git a/raknet/PacketPriority.h b/raknet/PacketPriority.h
index 7ecd137..47ae624 100644
--- a/raknet/PacketPriority.h
+++ b/raknet/PacketPriority.h
@@ -1,4 +1,19 @@
-// TODO: Implement PacketPriority.h
+/// \file
+/// \brief This file contains enumerations for packet priority and reliability enumerations.
+///
+/// This file is part of RakNet Copyright 2003 Kevin Jenkins.
+///
+/// Usage of RakNet is subject to the appropriate license agreement.
+/// Creative Commons Licensees are subject to the
+/// license found at
+/// http://creativecommons.org/licenses/by-nc/2.5/
+/// Single application licensees are subject to the license found at
+/// http://www.rakkarsoft.com/SingleApplicationLicense.html
+/// Custom license users are subject to the terms therein.
+/// GPL license users are subject to the GNU General Public
+/// License as published by the Free
+/// Software Foundation; either version 2 of the License, or (at your
+/// option) any later version.
 
 #ifndef __PACKET_PRIORITY_H
 #define __PACKET_PRIORITY_H
@@ -13,4 +28,15 @@ enum PacketPriority
 	NUMBER_OF_PRIORITIES
 };
 
+/// These enumerations are used to describe how packets are delivered.
+/// \note  Note to self: I write this with 3 bits in the stream.  If I add more remember to change that
+enum PacketReliability
+{
+	UNRELIABLE = 6,   /// Same as regular UDP, except that it will also discard duplicate datagrams.  RakNet adds (6 to 17) + 21 bits of overhead, 16 of which is used to detect duplicate packets and 6 to 17 of which is used for message length.
+	UNRELIABLE_SEQUENCED,  /// Regular UDP with a sequence counter.  Out of order messages will be discarded.  This adds an additional 13 bits on top what is used for UNRELIABLE.
+	RELIABLE,   /// The message is sent reliably, but not necessarily in any order.  Same overhead as UNRELIABLE.
+	RELIABLE_ORDERED,   /// This message is reliable and will arrive in the order you sent it.  Messages will be delayed while waiting for out of order messages.  Same overhead as UNRELIABLE_SEQUENCED.
+	RELIABLE_SEQUENCED /// This message is reliable and will arrive in the sequence you sent it.  Out or order messages will be dropped.  Same overhead as UNRELIABLE_SEQUENCED.
+};
+
 #endif