00</span>
<span class="w">                        </span><span class="n">ix2</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ix0</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">isd</span>
<span class="w">                        </span><span class="k">IF</span><span class="w"> </span><span class="p">(</span><span class="w"> </span><span class="n">ix2</span><span class="o">&gt;=</span><span class="n">ix1</span><span cl