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diff --git a/Core/MdePkg/Library/DxePcdLib/DxePcdLib.uni b/Core/MdePkg/Library/DxePcdLib/DxePcdLib.uni
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+++ b/Core/MdePkg/Library/DxePcdLib/DxePcdLib.uni
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+// /** @file
+// Instance of PCD Library using PCD Protocol.
+//
+// There are two PCD protocols as follows:
+// 1) PCD_PROTOCOL
+// It is EDKII implementation which support Dynamic/DynamicEx Pcds.
+// 2) EFI_PCD_PROTOCOL
+// It is defined by PI specification 1.2, Vol 3 which only support dynamicEx
+// type Pcd.
+// 
+// For dynamicEx type PCD, it is compatible between PCD_PROTOCOL and EFI_PCD_PROTOCOL.
+// 
+// This library instance uses the PCD_PROTOCOL to handle dynamic PCD request and use
+// EFI_PCD_PROTOCOL to handle dynamicEx type PCD.
+//
+// Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
+//
+// This program and the accompanying materials
+// are licensed and made available under the terms and conditions of the BSD License
+// which accompanies this distribution. The full text of the license may be found at
+// http://opensource.org/licenses/bsd-license.php.
+// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+//
+// **/
+
+
+#string STR_MODULE_ABSTRACT             #language en-US "PCD Library using PCD Protocol"
+
+#string STR_MODULE_DESCRIPTION          #language en-US "There are two PCD protocols: 1) PCD_PROTOCOL It is an EDKII implementation that supporst Dynamic/DynamicEx PCDs. 2) EFI_PCD_PROTOCOL It is defined by PI Specification 1.2, Vol 3, which only support dynamicEx type PCD.  For dynamicEx type PCDs, it is compatible between PCD_PROTOCOL and EFI_PCD_PROTOCOL.  This library instance uses the PCD_PROTOCOL to handle dynamic PCD requests and uses EFI_PCD_PROTOCOL to handle DynamicEx type PCDs."
+