diff --git a/raknet/RakPeer.cpp b/raknet/RakPeer.cpp
index cdbba31..53f740d 100644
--- a/raknet/RakPeer.cpp
+++ b/raknet/RakPeer.cpp
@@ -8,6 +8,7 @@
 RakPeer::RakPeer()
 {
 	MTUSize = DEFAULT_MTU_SIZE;
+	trackFrequencyTable = false;
 	maximumIncomingConnections = 0;
 	maximumNumberOfPeers = 0;
 	endThreads = true;
@@ -435,9 +436,20 @@ void RakPeer::vftable_CC()
 	// TODO: RakPeer::vftable_CC() (saco W: 100389C0) (server W: 4504C0 L: 806E110) (bot W: 404400 L: 807558A)
 }
 
-void RakPeer::vftable_D0()
+// --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+// Description:
+// Enables or disables our tracking of bytes input to and output from the network.
+// This is required to get a frequency table, which is used to generate a new compression layer.
+// You can call this at any time - however you SHOULD only call it when disconnected.  Otherwise you will only track
+// part of the values sent over the network.
+// This value persists between connect calls and defaults to false (no frequency tracking)
+//
+// Parameters:
+// doCompile - true to track bytes.  Defaults to false
+// --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+void RakPeer::SetCompileFrequencyTable( bool doCompile )
 {
-	// TODO: RakPeer::vftable_D0() (saco W: 10038A10) (server W: 450510 L: 806E170) (bot W: 404450 L: 80755EA)
+	trackFrequencyTable = doCompile;
 }
 
 void RakPeer::vftable_D4()
diff --git a/raknet/RakPeer.h b/raknet/RakPeer.h
index d3e3eb9..65318c7 100644
--- a/raknet/RakPeer.h
+++ b/raknet/RakPeer.h
@@ -145,7 +145,14 @@ public:
 	void vftable_C4();
 	void vftable_C8();
 	void vftable_CC();
-	void vftable_D0();
+
+	// --------------------------------------------------------------------------------------------Compression Functions - Functions related to the compression layer--------------------------------------------------------------------------------------------
+	/// Enables or disables frequency table tracking.  This is required to get a frequency table, which is used in GenerateCompressionLayer()
+	/// This value persists between connect calls and defaults to false (no frequency tracking)
+	/// \pre You can call this at any time - however you SHOULD only call it when disconnected.  Otherwise you will only trackpart of the values sent over the network.
+	/// \param[in] doCompile True to enable tracking 
+	void SetCompileFrequencyTable( bool doCompile );
+
 	void vftable_D4();
 	void vftable_D8();
 	void vftable_DC();
diff --git a/raknet/RakPeerInterface.h b/raknet/RakPeerInterface.h
index 8180ef6..f3ee047 100644
--- a/raknet/RakPeerInterface.h
+++ b/raknet/RakPeerInterface.h
@@ -141,7 +141,14 @@ public:
 	virtual void vftable_C4()=0;
 	virtual void vftable_C8()=0;
 	virtual void vftable_CC()=0;
-	virtual void vftable_D0()=0;
+
+	// --------------------------------------------------------------------------------------------Compression Functions - Functions related to the compression layer--------------------------------------------------------------------------------------------
+	/// Enables or disables frequency table tracking.  This is required to get a frequency table, which is used in GenerateCompressionLayer()
+	/// This value persists between connect calls and defaults to false (no frequency tracking)
+	/// \pre You can call this at any time - however you SHOULD only call it when disconnected.  Otherwise you will only trackpart of the values sent over the network.
+	/// \param[in] doCompile True to enable tracking 
+	virtual void SetCompileFrequencyTable( bool doCompile )=0;
+
 	virtual void vftable_D4()=0;
 	virtual void vftable_D8()=0;
 	virtual void vftable_DC()=0;