--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/PDK/Source/GUID-B526BA3A-14E4-53B4-9382-437475A1C8A4.dita	Tue Mar 30 11:56:28 2010 +0100
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-B526BA3A-14E4-53B4-9382-437475A1C8A4" xml:lang="en"><title>Patchable Constants</title><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>From version 9.3 of Symbian OS, DLLs can export certain constants. These
+are referred to as patchable constants, and you can change their values when
+the DLLs from which they are exported are incorporated into a ROM image. </p>
+<p>This gives you the ability to create a variety of ROM images with constants
+of different values without the need to change any source code nor to rebuild
+the DLLs. </p>
+<p>You change the value of a constant when you build your ROM image by adding
+the patchdata keyword into your <filepath>.oby</filepath> file. </p>
+<p>See : <xref href="GUID-49397CFD-955A-5DF6-9251-368C44224966.dita">Build tools
+reference</xref> and <xref href="GUID-7FF363B0-B05F-5490-8D9C-59061B905381.dita">How
+to build ROMs with variants</xref>. </p>
+</conbody></concept>
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