                <span class="comment">% Get the number of edges of the element</span>
                nEdges = nLinNodes;

                <span class="comment">% Get the coordinates of the element</span>
                cX = [this.NODE(this.ELEM{el}(1:nLinNodes),1); this.NODE(this.ELEM{el}(1),1)];
                cY = [this.NODE(this.ELEM{el}(1:nLinNodes),2); this.NODE(this.ELEM{el}(1),2)];

                <span class="comment">% Get the nodes of the borders</span>
                NdBorders = [this.ELEM{e