--port
=port-selectionEnables the Tcl server component to listen on the specified port. If the value of this option is managed, the port manager is contacted to allocate a port. Otherwise the value must be the integer port number on which to listen.
--ring
=nameProvides the name of the local ring into which data will be placed. If this switch is omitted, the ring name will be the username running the program.
--help
Outputs a summary of the command lineo ptions and exits without doing anything else useful.
--version
Outputs the program version number and exists without doing anything else useful.