ged even   after initialization.
               </li>
            </ul>
         </div><pre> penm.opts=[];</pre><p><b>Define decision variables</b></p>
         <div>
            <ul>
               <li><b>number of (ordinary) decision variables</b>  If the field is not present, <tt>Nx=0</tt>; lower/upper bounds for box  constraints will be ignored.
               </li>
            </ul>
         </div><pre> penm.Nx = 7;</pre><div>
            <ul>
               <li><b>number of matrix variables</b>, shoul