Starts a Low-Bandwidth X (LBX) proxy server.
LBX is an X server extension that performs compression of the X
protocol. LBX was developed for those configurations where the
display server is separated from the client by a slow speed line
such as a 56K dial-in modem or a wide-area network (WAN).
The LBX proxy server appears to the client as any other X server.
The proxy server accepts a connection request from a client
program and acts as an intermediary between the client and the
X server. Communication between the proxy server and the client
uses the standard X protocol. Communication between the proxy
server and the X server uses an LBX-enhanced X protocol.