to read {HEAD ~ the set values} and image data out of {TAIL ~ first address space} of said storage unit using direct memory access 
out of
to read { HEAD ~ the set values } and image data out of { TAIL ~ first address space } of said storage unit using direct memory access
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH