www.pudn.com > flex_bingle.rar > COPYING

Flex carries the copyright used for BSD software, slightly modified 
because it originated at the Lawrence Berkeley (not Livermore!) Laboratory, 
which operates under a contract with the Department of Energy: 
 
	Copyright (c) 1990 The Regents of the University of California. 
	All rights reserved. 
 
	This code is derived from software contributed to Berkeley by 
	Vern Paxson. 
 
	The United States Government has rights in this work pursuant 
	to contract no. DE-AC03-76SF00098 between the United States 
	Department of Energy and the University of California. 
 
	Redistribution and use in source and binary forms are permitted 
	provided that: (1) source distributions retain this entire 
	copyright notice and comment, and (2) distributions including 
	binaries display the following acknowledgement:  ``This product 
	includes software developed by the University of California, 
	Berkeley and its contributors'' in the documentation or other 
	materials provided with the distribution and in all advertising 
	materials mentioning features or use of this software.  Neither the 
	name of the University nor the names of its contributors may be 
	used to endorse or promote products derived from this software 
	without specific prior written permission. 
 
	THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 
	IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 
	WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
	PURPOSE. 
 
This basically says "do whatever you please with this software except 
remove this notice or take advantage of the University's (or the flex 
authors') name". 
 
Note that the "flex.skl" scanner skeleton carries no copyright notice. 
You are free to do whatever you please with scanners generated using flex; 
for them, you are not even bound by the above copyright.