efault values used. Just read the appropriate part of the
            object, such as
         </p><pre> problem.opts     %option settings set by the user
 problem.allopts  %all options set, default values &amp; user's ones
 ...</pre><p>Some of these might be read-only and changes are not allowed.</p>
         <p>When everything is ready, you invoke the solver</p><pre> problem.solve();</pre><p>Depending on option settings, you will see the progress or final message.</p>
         <p>You can retrieve the resu