--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/PDK/Source/GUID-31C19816-ED66-4E99-BF7C-33602C8B4AA2.dita	Fri Jan 22 18:26:19 2010 +0000
@@ -0,0 +1,29 @@
+<?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 task
+  PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">
+<task id="GUID-31C19816-ED66-4E99-BF7C-33602C8B4AA2" xml:lang="en"><title>Define
+and create a service</title><prolog><metadata><keywords/></metadata></prolog><taskbody>
+<context>       <p>The first step in creating a new service is to define what
+the service is its use. Services must be implemented over the server application
+framework when there is a need for a client and UI service implementation
+to be implemented in separate processes. For instance, this may be done to
+avoid capability clashes between components.   When a new service type is
+identified, a new UID must be assigned to identify it. </p><p><b>Define the
+APIs</b></p><p>The client and server-side APIs must be implemented through
+an IPC protocol. Therefore, usage of complex objects which are difficult to
+represent over IPC must be avoided.</p><p>The following example shows the
+UID and IPC message IDs for a chat service.</p><codeblock xml:space="preserve">const TUid KInterAppChatType = { 0x01010202 };
+enum
+    {topic
+    EInterAppChatSend = RApaAppServiceBase::KServiceCmdBase,
+    EInterAppChatReceive,    EInterAppChatCancelReceive
+    };</codeblock></context>
+</taskbody></task>
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