invisible != null &&
invisible == null &&
	public void JSLFrameClosed(JSLFrameEvent e) {	    windows.remove(e.getJSLFrame());	    if (windows.size() < 1 &&		    invisible != null &&		    !toolbar.isVisible() ) {		PatchEdit.appConfig.savePrefs();		// We shouldn't need to unload the midi driver if		// the whole JVM is going away.		// unloadMidiDriver();		System.exit(0);	    }			}