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