o meet all of these conditions:</p>
<blockquote>a)  You must cause the modified files to carry prominent notices stating  that you changed the files and the date of any change.</blockquote>
<blockquote>b)  You must cause any work that you distribute or publish, that in whole  or in part contains or is derived from the Program or any part  thereof, to be licensed as a whole at no charge to all third parties  under the terms of this License.</blockquote>
<blockquote>c)  If the modified program normally reads 