Copyright © 2017 by Rafael Capurro, all rights
reserved. This text may be used and shared in accordance with the
fair-use provisions of U.S. and international copyright law, and it may
be archived and redistributed in electronic form, provided that the
author is notified and no fee is charged for access. Archiving,
redistribution, or republication of this text on other terms, in any
medium, requires the consent of the author.
