overlay	chrome://navigator/content/navigator.xul	chrome://preferential/content/preferential-nav-overlay.xul
overlay	chrome://browser/content/browser.xul	chrome://preferential/content/preferential-phn-overlay.xul
overlay	chrome://messenger/content/mailWindowOverlay.xul	chrome://preferential/content/preferential-thn-overlay.xul
content	preferential	jar:chrome/preferential.jar!/content/

locale	preferential	en-US	jar:chrome/preferential.jar!/locale/en-US/preferential/