if (key != null && store.contains(key))
showAnnotation= store.getBoolean(key);
if (showAnnotation)
column.addAnnotationType(preference.getAnnotationType());
}
column.addAnnotationType(Annotation.TYPE_UNKNOWN);
// link to preference store
fPropertyListener= new IPropertyChangeListener() {
public void propertyChange(PropertyChangeEvent event) {
String property= event.getProperty();