The presence of the message is polled using the first application and, if the message is present, {HEAD ~ the message} is transmitted from the internal storage to {TAIL ~ the first application} for processing 
is transmitted to
The presence of the message is polled using the first application and , if the message is present , { HEAD ~ the message } is transmitted from the internal storage to { TAIL ~ the first application } for processing
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH