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The following files are modified versions of map and set from the
Objective Caml library and are distributed under the GNU LIBRARY GENERAL
PUBLIC LICENSE Version 2 as below. 

ocaml-lib/pmap.mli
ocaml-lib/pmap.ml
ocaml-lib/pset.mli
ocaml-lib/pset.ml


                  GNU LIBRARY GENERAL PUBLIC LICENSE
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                     END OF TERMS AND CONDITIONS

     Appendix: How to Apply These Terms to Your New Libraries

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Also add information on how to contact you by electronic and paper mail.

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  <signature of Ty Coon>, 1 April 1990
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That's all there is to it!