ge file.\n'</span>);
                this.printExit();
                status = 0;
                <span class="keyword">return</span>;
            <span class="keyword">end</span>
            <span class="keyword">if</span> (~exist(<span class="string">'drv'</span>,<span class="string">'var'</span>) || isempty(drv))
                fprintf(2,<span class="string">'\nInvalid stored data.\n'</span>);
                this.printExit();
                status = 0;
                <span class="keyword">return</sp