     logical,
            </td>
<td>intent(in),</td>
              <td>optional,</td>            <td>
              target, dimension(:)
            </td>
            <td>::</td>
            <td><strong>map</strong></td>
            <td>
                <p>An optional array of the same size as beta that can be used to
eliminate a parameter from the model (false), or keep a parameter
in the model (true).  If not supplied, all parameters will be assumed
to be part of the model as if the array were filled with