--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-57DD8365-E60F-55C6-BB24-8D215A31A8AF.dita	Thu Jan 21 18:18:20 2010 +0000
@@ -0,0 +1,26 @@
+<?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-57DD8365-E60F-55C6-BB24-8D215A31A8AF" xml:lang="en"><title>How
+to track changes</title><shortdesc>This topic describes hoe to track changes made to file and free
+disk space.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<section id="GUID-DF41D2BE-1FD6-421F-9D07-49CCAC7AC288"><title>File changes</title> <p>To be notified whenever there is a
+change in the file system, use <xref href="GUID-E263C747-946F-35AA-9F1D-41833BD350FC.dita#GUID-E263C747-946F-35AA-9F1D-41833BD350FC/GUID-5F5D51B6-2643-3482-8C9F-71DF6C3355C4"><apiname>RFs::NotifyChange()</apiname></xref>. This
+is better than having to poll regularly. </p> <p>Use the <codeph>TOpenFileScan</codeph> class
+to find out which files are open, and the thread id of the program that has
+them open. This is useful for programs such as shells to be able to highlight
+files that are presently open. It is also useful for backup programs, which
+may need to close or suspend the owning program before doing a backup. </p> </section>
+<section id="GUID-754E8C5D-BE23-43D7-93BB-9B22B89E4241"><title>Free disk space changes</title> <p>Clients can use <xref href="GUID-E263C747-946F-35AA-9F1D-41833BD350FC.dita#GUID-E263C747-946F-35AA-9F1D-41833BD350FC/GUID-38A2D71A-DDB5-355D-863D-43802C67D51F"><apiname>RFs::NotifyDiskSpace()</apiname></xref> to
+ask that they be notified when free disk space on a drive crosses a client
+defined threshold value. This means that a client is notified if free disk
+space either increases above the threshold value or decreases below that value. </p> </section>
+</conbody></concept>
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