The application may collect credentials from {HEAD ~ a user} by creating {TAIL ~ a user interface}, which may be built by the application based on the credential description 
by creating
The application may collect credentials from { HEAD ~ a user } by creating { TAIL ~ a user interface } , which may be built by the application based on the credential description
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH