Command: SHOW/HEADING   Displays the heading and distance to the country
                        specified on the command. PacketCluster uses your 
                        latitude/longitude information if you have specified
                        it with the SET/LOCATION command.  Otherwise, it
                        will attempt to use the location of the PacketCluster 
                        station for the calculation.
              Syntax:   SHow/Heading dxcc-prefix