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