{TAIL ~ said detecting step} comprises detecting {HEAD ~ the binary data} of the designating information embedded in the document data for each kind of area of the document data separated in said separating step 
{ TAIL ~ said detecting step } comprises detecting { HEAD ~ the binary data } of the designating information embedded in the document data for each kind of area of the document data separated in said separating step
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH