Permission to use, copy, modify, and distribute this software for
any purpose without fee is hereby granted, provided that this en-
tire notice is included in all copies of any software which is or
includes  a  copy  or  modification  of  this software and in all
copies of the supporting documentation for such software.        
                                                                 
This  work was produced at the University of California, Lawrence
Livermore National Laboratory under  contract  no.  W-7405-ENG-48
between  the  U.S.  Department  of  Energy and The Regents of the
University of California for the operation of UC LLNL.           
                                                                 
                           DISCLAIMER                            
                                                                 
This  software was prepared as an account of work sponsored by an
agency of the United States Government. Neither the United States
Government  nor the University of California nor any of their em-
ployees, makes any warranty, express or implied, or  assumes  any
liability  or  responsibility  for the accuracy, completeness, or
usefulness of any information,  apparatus,  product,  or  process
disclosed,   or  represents  that  its  use  would  not  infringe
privately-owned rights. Reference herein to any specific  commer-
cial  products,  process,  or  service  by trade name, trademark,
manufacturer, or otherwise, does not  necessarily  constitute  or
imply  its endorsement, recommendation, or favoring by the United
States Government or the University of California. The views  and
opinions  of authors expressed herein do not necessarily state or
reflect those of the United States Government or  the  University
of  California,  and shall not be used for advertising or product
endorsement purposes.