R-code version 1.0 Copyright (c) 1994 R. Dennis Cook and Sanford Weisberg
XLISP-STAT 2.1 Copyright (c) 1990, by Luke Tierney
XLISP version 2.1, Copyright (c) 1989, by David Betz.

See the file COPYING for the license agreement for XLISP and XLISP-STAT 2.1.

License to use the R-code is granted to purchasers of "An Introduction to
Regression Graphics," by R. Dennis Cook and Sanford Weisberg, published by
John Wiley, Inc., 1994, as follows:

1. If the purchaser is an individual, then that person may use
   Version 1 of the R-code on any computer system.

2. If the purchaser is a library, then any person who checks out this book 
   may use Version 1 of the R-code while in possession of the book.

3. If the purchaser is any other entity, then one user at a time affiliated 
   with that entity may use Version 1 of the R-code.  For several 
   simultaneous users (e.g., in a computer laboratory), one copy of the 
   book per user is required.

This license does not grant permission to give copies of the R-code to 
anyone.  If your sell this book, then you also sell you right to use the 
R-code.

Except when otherwise stated in writing the copyright holders and/or 
other parties provide the program "as is" without warranty of any kind, 
either expressed or implied, including, but not limited to, the implied 
warranties of merchantability and fitness for a particular purpose.  
The entire risk as to the quality and performance of the program is 
with you.  Should the program prove defective, you assume the cost of 
all necessary servicing, repair or correction.