What is this file? Found in System32 folder

/*++ BUILD Version: 0001    // Increment this if a change has global effects

Copyright (c) 1992  Microsoft Corporation

Module Name:

    rasctrnm.h

Abstract:

    This file defines the ras symbols used in the rasctrs.ini file for
    loading the counters to registry. 

Created:

    Thomas J. Dimitri            28 May 93

Revision History

    Ram Cherala                 04 Nov 93   Added this header 


--*/
//
//  rasctrnm.h
//
//  Offset definition file for exensible counter objects and counters
//
//  These "relative" offsets must start at 0 and be multiples of 2 (i.e.
//  even numbers). In the Open Procedure, they will be added to the
//  "First Counter" and "First Help" values fo the device they belong to,
//  in order to determine the  absolute location of the counter and
//  object names and corresponding help text in the registry.
//
//  this file is used by the extensible counter DLL code as well as the
//  counter name and help text definition file (.INI) file that is used
//  by LODCTR to load the names into the registry.
//


#define RASPORTOBJ         0


//
// The following constants are good for both Total and individual port.
//

#define BYTESTX            2
#define BYTESRX            4

#define FRAMESTX        6
#define FRAMESRX        8

#define PERCENTTXC        10
#define PERCENTRXC        12

#define CRCERRORS        14
#define TIMEOUTERRORS            16
#define SERIALOVERRUNS            18
#define ALIGNMENTERRORS            20
#define BUFFEROVERRUNS            22

#define TOTALERRORS        24

#define BYTESTXSEC         26
#define BYTESRXSEC         28

#define FRAMESTXSEC        30
#define FRAMESRXSEC        32

#define TOTALERRORSSEC          34


//
// The following constants are good only for Total.
//

#define RASTOTALOBJ             36

#define TOTALCONNECTIONS        38