w the opening of the parameter dialog in case of linear
 fitter. This is needed for example for fixing some of the
 parameters</li>

 <li>Improve minimization panel by adding some extra methods, like
 combined for a combined migrad-simplex minimization (option
 "MINIMIZE" in Minuit).</li>

 <li>Improve the slider by adding a numeric entry. </li>

 <li>Add the Advanced Graphics dialog, that allows the user to perform
 Contour and Scan operation on the last fit.</li>

 <li> Fix various bugs in setting the fit