 dictionary</span>
         <span class="n">val</span><span class="o">=</span><span class="s2">&quot; &quot;</span>                                  <span class="c">! set value to blank</span>
         <span class="n">llen</span><span class="o">=</span><span class="mi">0</span>                                   <span class="c">! set length to zero</span>
         <span class="n">ier</span><span class="o">=-</span><span class="mi">1</span>                                   <span class="c">! set error flag to