{HEAD ~ Selected portions} of a glass sheet are heated to elevated temperatures and offset, i.e. reformed, relative to the remaining portions of the glass sheet while maintaining {TAIL ~ the optical properties} of the remaining portions of the glass sheet 
{ HEAD ~ Selected portions } of a glass sheet are heated to elevated temperatures and offset , i.e. reformed , relative to the remaining portions of the glass sheet while maintaining { TAIL ~ the optical properties } of the remaining portions of the glass sheet
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH