plugins/org.eclipse.gmf.tooling.runtime.ocl.impactanalyzer/fragment.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>
<fragment>
	<extension point="org.eclipse.gmf.tooling.runtime.ocl_tracker_factory">
		<oclTrackerFactory
        	class="org.eclipse.gmf.tooling.runtime.impl.ocl.tracker.impactanalyzer.ImpactAnalyzerTrackerFactory"
        	default="true"/>
	</extension>
</fragment>