For example, {HEAD ~ the signature key generator} 123 may look for a directory that is named after {TAIL ~ the signature key} 
For example , { HEAD ~ the signature key generator } 123 may look for a directory that is named after { TAIL ~ the signature key }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL