-If the $PortID$ specifies a unix family socket and the $Hostname$
-differs from that returned by $getHostname$ then an error is
-raised. Alternatively an empty string may be given to $connectTo$
+If the @PortID@ specifies a unix family socket and the @Hostname@
+differs from that returned by @getHostname@ then an error is
+raised. Alternatively an empty string may be given to @connectTo@