Permission is granted herein to use, copy, and redistribute this software for any use, including but not limited to research and education, as long as this copyright notice is included. This software is provided "as is", and no responsibility is accepted by the authors or the copyright holders for any direct or indirect damage deriving as a consequence of its use.
Copyright
(c) 1998, Marco Ramoni and Paola Sebastiani, The Open University. All rights
reserved.