{HEAD ~ This invention} relates to {TAIL ~ materials} having a textured surface and to methods for producing such products 
relates to
{ HEAD ~ This invention } relates to { TAIL ~ materials } having a textured surface and to methods for producing such products
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH