\chapter{Preface} #%{{{
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  Volview is an extension module which adds volume visulization
  capability to the S-Lang interpreter, using the Gtk widget set
  and volpack rendering library.

  Copyright (C) 2008 Massachusetts Institute of Technology
  Author: Michael S. Noble <mnoble@space.mit.edu>

  This software was developed with SLIRP at the MIT Kavli Institute
  for Astrophysics; it was funded in part by NASA and the Smithsonian
  Institution, through the AISRP grant NNG05GC23G and Smithsonian
  Astrophysical Observatory contract SV3-73016.

  Permission to use, copy, modify, distribute, and sell this software
  and its documentation for any purpose is hereby granted without fee,
  provided that the above copyright notice appear in all copies and
  that both that copyright notice and this permission notice appear in
  the supporting documentation, and that the name of the Massachusetts
  Institute of Technology not be used in advertising or publicity
  pertaining to distribution of the software without specific, written
  prior permission.  The Massachusetts Institute of Technology makes
  no representations about the suitability of this software for any
  purpose.  It is provided "as is" without express or implied warranty.
  
  THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY DISCLAIMS ALL WARRANTIES
  WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
  MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL THE MASSACHUSETTS
  INSTITUTE OF TECHNOLOGY BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
  OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
  NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
  WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#%}}}