span class="kd">::</span><span class="w"> </span><span class="n">ib</span>
<span class="kt">integer</span><span class="w">         </span><span class="kd">::</span><span class="w"> </span><span class="n">k</span>
<span class="w">   </span><span class="n">z</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">x</span>
<span class="w">   </span><span class="n">k</span><span class="o">=</span><span class="mi">0</span><span class="w">  </span><span class="c">! preset to 