Copyright (c) <year> by <who>.

   Use of this program for non-commercial purposes is permitted
provided that such use is acknowledged both in the software itself and
in accompanying documentation.

   Use of this program for commercial purposes is also permitted, but
only if, in addition to the acknowledgement required for
non-commercial users, written notification of such use is provided by
the commercial user to the authors prior to the fabrication and
distribution of the resulting software.

   This software is provided ``as is'' without express or implied
warranty.