% Listen for socket connections on port @var{port}, read a command @
SYNOPSIS
function UTLsbnserver (portnum)
DESCRIPTION
% -*- texinfo -*-
% @deftypefn{Function File} {} UTLsbnserver(@var{port})
% Listen for socket connections on port @var{port}, read a command @
% and return the corresponding output to the socket.
% @end deftypefn