Q Algorithm
                       [ [1]Construct ] [ Algorithm ]

   All packets:
   {
       If there is a q construct in the path:
           Skip to "All packets with q constructs"

       If the packet entered the server from an UDP port:
       {
           Append ,qAU,SERVERLOGIN
           Quit q processing
       }

       If the packet entered the server from an unverified connection and
   has been converted to TCPXX format (per current validation algorithm):
       {
            (All  packets  not  deemed "OK" from an unverified connection
   should never make it here.)
           Append ,qAX,FROMCALL
           Skip to "All packets with q constructs"
       }

       If packet entered the server from a verified connection:
       {
           If header is terminated with ,I:
           {
               If the VIACALL preceding the ,I matches the login:
                   Change from ,VIACALL,I to ,qAR,VIACALL
               Else
                   Change from ,VIACALL,I to ,qAr,VIACALL
           }
           Else If the FROMCALL matches the login:
               Append ,qAC,FROMCALL
           Else
               Append ,qAS,login
           Skip to "All packets with q constructs"
       }

        If  packet  entered  the  server  from an outbound connection (to
   another server's port 1313, for instance):
       {
           If header is terminated with ,I:
               Change from ,VIACALL,I to ,qAr,VIACALL
           Else
                 Append   ,qAS,IPADDR  (IPADDR  is  an  8  character  hex
   representation of the IP address of the remote server)
       }
   }

   All packets with q constructs:
   {
       if ,qAZ, is the q construct:
       {
           Dump to the packet to the reject log
           Quit processing the packet
       }

       If ,SERVERLOGIN or IGATECALL is found after the q construct:
       {
            Dump  to  the  loop  log  with  the  sender's  IP address for
   identification
           Quit processing the packet
       }

       If the packet is from a verified port and the login is found after
   the q construct but is not the LAST VIACALL:
       {
            Dump  to  the  loop  log  with  the  sender's  IP address for
   identification
           Quit processing the packet
       }

        If trace is on, the q construct is qAI, or the FROMCALL is on the
   server's trace list:
       {
            If  the packet is from a verified port where the login is not
   found after the q construct:
               Append ,login
           Append ,SERVERLOGIN
       }
   }