diff -r 14dc2103a631 -r ed1c9f64298a trace/tracebuilder/com.nokia.tracebuilder/src/com/nokia/tracebuilder/engine/rules/osttrace/OstConstants.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trace/tracebuilder/com.nokia.tracebuilder/src/com/nokia/tracebuilder/engine/rules/osttrace/OstConstants.java	Wed Jun 23 14:35:40 2010 +0300
@@ -0,0 +1,67 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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:
+*
+* Description:
+*
+* Constants for OST parser and formatter
+*
+*/
+package com.nokia.tracebuilder.engine.rules.osttrace;
+
+/**
+ * Constants for OST parser and formatter
+ * 
+ */
+interface OstConstants {
+
+	/**
+	 * API tag for macros which have the preprocessor level parameter
+	 */
+	String PREPROCESSOR_LEVEL_TAG = "Def"; //$NON-NLS-1$
+
+	/**
+	 * API tag for function entry traces
+	 */
+	String FUNCTION_ENTRY_TAG = "FunctionEntry"; //$NON-NLS-1$
+
+	/**
+	 * API tag for function exit traces
+	 */
+	String FUNCTION_EXIT_TAG = "FunctionExit"; //$NON-NLS-1$
+
+	/**
+	 * API tag for performance event start
+	 */
+	String PERFORMANCE_EVENT_START_TAG = "EventStart"; //$NON-NLS-1$
+
+	/**
+	 * API tag for performance event stop
+	 */
+	String PERFORMANCE_EVENT_STOP_TAG = "EventStop"; //$NON-NLS-1$
+
+	/**
+	 * API tag for traces with user-defined data format
+	 */
+	String DATA_TRACE_TAG = "Data"; //$NON-NLS-1$
+	
+	/**
+	 * API tag for state traces
+	 */
+	String STATE_TRACE_TAG = "State"; //$NON-NLS-1$
+
+	/**
+	 * API tag for traces with extension parameters
+	 */
+	String EXTENSION_TRACE_TAG = "Ext"; //$NON-NLS-1$
+
+}