{HEAD ~ The viewer} may also include {TAIL ~ memory} into which a file or files are downloaded for subsequent viewing 
include
{ HEAD ~ The viewer } may also include { TAIL ~ memory } into which a file or files are downloaded for subsequent viewing
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH