bug 183818: [pde viz] Add forward and back button support to the PDE Dependency Graph
https://bugs.eclipse.org/bugs/show_bug.cgi?id=183818
diff --git a/visualization/plugins/org.eclipse.pde.visualization.dependency/.classpath b/visualization/plugins/org.eclipse.pde.visualization.dependency/.classpath
index b199b8b..92e3fb3 100644
--- a/visualization/plugins/org.eclipse.pde.visualization.dependency/.classpath
+++ b/visualization/plugins/org.eclipse.pde.visualization.dependency/.classpath
@@ -6,7 +6,7 @@
 	<classpathentry exported="true" kind="lib" path="org.eclipse.mylyn.zest.layouts_0.5.0.0.jar"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.4">
 		<accessrules>
-			<accessrule kind="nonaccessible" pattern="**/System/**"/>
+			<accessrule kind="discouraged" pattern="**/System/**"/>
 		</accessrules>
 	</classpathentry>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>