e.ARjsMultiMarkerFile, then write one with default marker
	if( localStorage.getItem('ARjsMultiMarkerFile') === null ){
		THREEx.ArMultiMarkerControls.storeDefaultMultiMarkerFile(urlOptions.trackingBackend)
	}

	// get multiMarkerFile from localStorage
	console.assert( localStorage.getItem('ARjsMultiMarkerFile') !== null )
	var multiMarkerFile = localStorage.getItem('ARjsMultiMarkerFile')

	//////////////////////////////////////////////////////////////////////////////
	//		Create ArMultiMarkerControls
	/////