The user roles in {HEAD ~ the role database} are available for use by a plurality of users of {TAIL ~ the application} 
The user roles in { HEAD ~ the role database } are available for use by a plurality of users of { TAIL ~ the application }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL