{HEAD ~ Pending specifications} are specifications that will not execute until some condition or {TAIL ~ conditions} are satisfied on the client 
{ HEAD ~ Pending specifications } are specifications that will not execute until some condition or { TAIL ~ conditions } are satisfied on the client
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH