Zymb: An Asynchronous Python Communication Package
    Designed by Andrew Plotkin <erkyrath@eblong.com>
    Zymb home page: <http://eblong.com/zarf/zymb/>

The Python source code in this module, and its submodules, is
copyright 2005-7 by Andrew Plotkin. You may copy and distribute it
freely, by any means and under any conditions. You may incorporate
this code into your own software and distribute that, or modify this
code and distribute the modified version, as long as you retain a
notice in your software or documentation which includes this copyright
notice, this license, and the URL shown above.