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diff --git a/engine/dt_recv_eng.h b/engine/dt_recv_eng.h
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+++ b/engine/dt_recv_eng.h
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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef DATATABLE_RECV_ENG_H
+#define DATATABLE_RECV_ENG_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+#include "dt_recv.h"
+#include "bitbuf.h"
+#include "dt.h"
+
+class CStandardSendProxies;
+
+// ------------------------------------------------------------------------------------------ //
+// RecvTable functions.
+// ------------------------------------------------------------------------------------------ //
+
+// These are the module startup and shutdown routines.
+bool		RecvTable_Init( RecvTable **pTables, int nTables );
+void		RecvTable_Term( bool clearall = true );
+
+// After calling RecvTable_Init to provide the list of RecvTables, call this
+// as the server sends its SendTables over. When bNeedsDecoder is specified,
+// it will precalculate the necessary data to actually decode this type of
+// SendTable from the server. nDemoProtocol = 0 means current version.
+bool		RecvTable_RecvClassInfos( bf_read *pBuf, bool bNeedsDecoder, int nDemoProtocol = 0);
+
+
+// After ALL the SendTables have been received, call this and it will create CRecvDecoders
+// for all the SendTable->RecvTable matches it finds.
+// Returns false if there is an unrecoverable error.
+//
+// bAllowMismatches is true when playing demos back so we can change datatables without breaking demos.
+// If pAnyMisMatches is non-null, it will be set to true if the client's recv tables mismatched the server's ones.
+bool		RecvTable_CreateDecoders( const CStandardSendProxies *pSendProxies, bool bAllowMismatches, bool *pAnyMismatches=NULL );
+
+// objectID gets passed into proxies and can be used to track data on particular objects.
+// NOTE: this function can ONLY decode a buffer outputted from RecvTable_MergeDeltas
+//       or RecvTable_CopyEncoding because if the way it follows the exclude prop bits.
+bool		RecvTable_Decode( 
+	RecvTable *pTable, 
+	void *pStruct, 
+	bf_read *pIn, 
+	int objectID,
+	bool updateDTI = true
+	);
+
+// This acts like a RecvTable_Decode() call where all properties are written and all their values are zero.
+void RecvTable_DecodeZeros( RecvTable *pTable, void *pStruct, int objectID );
+
+// This writes all pNewState properties into pOut.
+//
+// If pOldState is non-null and contains any properties that aren't in pNewState, then
+// those properties are written to the output as well. Returns # of changed props
+int RecvTable_MergeDeltas(
+	RecvTable *pTable,
+
+	bf_read *pOldState,		// this can be null
+	bf_read *pNewState,
+
+	bf_write *pOut,
+
+	int objectID = - 1,
+	
+	int	*pChangedProps = NULL,
+
+	bool updateDTI = false // enclude merge from newState in the DTI reports
+	);
+
+
+// Just copies the bits from the bf_read into the bf_write (this function is used
+// when you don't know the length of the encoded data).
+void RecvTable_CopyEncoding( 
+	RecvTable *pRecvTable, 
+	bf_read *pIn, 
+	bf_write *pOut,
+	int objectID
+	);
+
+
+
+// ------------------------------------------------------------------------------------------ //
+// Globals
+// ------------------------------------------------------------------------------------------ //
+
+// This is incremented each time a property is decoded.
+extern int g_nPropsDecoded;
+
+
+#endif // DATATABLE_RECV_ENG_H