In {HEAD ~ this case}, the file includes content instances, each content instance being associated with a respective field, and {TAIL ~ each field} having a respective type 
In { HEAD ~ this case } , the file includes content instances , each content instance being associated with a respective field , and { TAIL ~ each field } having a respective type
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH