In {TAIL ~ one embodiment}, {HEAD ~ an inner layer} of the multi layer substrate can be provided with perforations 
In
In { TAIL ~ one embodiment } , { HEAD ~ an inner layer } of the multi layer substrate can be provided with perforations
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH