.BR 0x ,
of exactly the right length (8 and 4 digits, respectively), being
a pairs of hex digits for each byte in the address or port number when
-expressed in network byte order.
+expressed in host byte order. For example, the port argument is the
+result of something like
+.B sprintf(arg,
+.B """%04X"",
+.BR sin.sin_port) .
.PP
.B helper
will not bind to ports 512 and onwards, because programs like