Text, images, tables, links and the like are represented in {HEAD ~ the memory structure}, which may be maintained in databases for {TAIL ~ eventual editing} 
Text , images , tables , links and the like are represented in { HEAD ~ the memory structure } , which may be maintained in databases for { TAIL ~ eventual editing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL