三层服务器 remote Data Module 生成的 *TLB.pas 文件有关问题 请下

三层服务器 remote Data Module 生成的 *_TLB.pas 文件问题 请高手指点下
我新建了一个 remote Data module 系统就自动生成了 **_TLB.pas 文件.

为什么我在**_TLB.pas 的接口里面定义自已的函数,保存了又就跟原来生成的一样了?

在网上找了半天还是没找到答案,请高手帮心啊!

例如

unit ScktSrvr_TLB;

// ************************************************************************ //
// WARNING  
// -------  
// The types declared in this file were generated from data read from a  
// Type Library. If this type library is explicitly or indirectly (via  
// another type library referring to this type library) re-imported, or the  
// 'Refresh' command of the Type Library Editor activated while editing the  
// Type Library, the contents of this file will be regenerated and all  
// manual modifications will be lost.  
// ************************************************************************ //

// PASTLWTR : 1.2
// File generated on 2007-9-5 9:39:50 from Type Library described below.

// ************************************************************************ //
// Type Lib: F:\wfl\myServer\ScktSrvr.tlb (1)
// LIBID: {10F8A33B-B5E0-4D8C-ADCE-D4A36D1E94DC}
// LCID: 0
// Helpfile: 
// HelpString: ScktSrvr Library
// DepndLst: 
// (1) v1.0 Midas, (C:\WINDOWS\system32\midas.dll)
// (2) v2.0 stdole, (C:\WINDOWS\system32\stdole2.tlb)
// ************************************************************************ //
{$TYPEDADDRESS OFF} // Unit must be compiled without type-checked pointers. 
{$WARN SYMBOL_PLATFORM OFF}
{$WRITEABLECONST ON}
{$VARPROPSETTER ON}
interface

uses Windows, ActiveX, Classes, Graphics, Midas, StdVCL, Variants;
  

// *********************************************************************//
// GUIDS declared in the TypeLibrary. Following prefixes are used:  
// Type Libraries : LIBID_xxxx  
// CoClasses : CLASS_xxxx  
// DISPInterfaces : DIID_xxxx  
// Non-DISP interfaces: IID_xxxx  
// *********************************************************************//
const
  // TypeLibrary Major and minor versions
  ScktSrvrMajorVersion = 1;
  ScktSrvrMinorVersion = 0;

  LIBID_ScktSrvr: TGUID = '{10F8A33B-B5E0-4D8C-ADCE-D4A36D1E94DC}';

  IID_Itest: TGUID = '{234031C4-60C2-4601-9F41-191E27FCF18A}';
  CLASS_test: TGUID = '{ABEB10B2-3060-4F79-8519-EBA88500E20E}';
type

// *********************************************************************//
// Forward declaration of types defined in TypeLibrary  
// *********************************************************************//
  Itest = interface;
  ItestDisp = dispinterface;

// *********************************************************************//
// Declaration of CoClasses defined in Type Library  
// (NOTE: Here we map each CoClass to its Default Interface)  
// *********************************************************************//
  test = Itest;


// *********************************************************************//
// Interface: Itest
// Flags: (4416) Dual OleAutomation Dispatchable
// GUID: {234031C4-60C2-4601-9F41-191E27FCF18A}
// *********************************************************************//
  Itest = interface(IAppServer)
  ['{234031C4-60C2-4601-9F41-191E27FCF18A}']