This package is distributed under the ACM license .

Copyrighted and Licensed by ACM,
see http://www.acm.org/publications/policies/softwarecrnotice

In order to fulfil the ACM copyright and license noted above,
it is stated here that this work contains modified ACM material,
and to fulfil this, the modified work including the R interface
is available free to secondary users, and no charge is associated
with such copies.
