</tt>).
<br><br>
In future release additional implementations of <tt>RooAbsDataStore</tt> will
be provided that will support new dataset functionality such as the
ability to construct 'joint' dataset from two input datasets without
the need to copy the input data and 'filtered' datasets that represent
a reduced view (in dimensions or by selecting events) of a dataset
without the need to copy content.


<h4>Various workspace improvements</h4>

A number of smaller and larger improvements has been made to the 