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    <section>
    <h2><span class="anchor" id="src"></span>Source Code</h2>
    <div class="highlight"><pre><span></span><span class="k">subroutine </span><span class="n">dl_init</span><span class="p">(</span><span class="n">xmax0</span><span class="p">,</span><span class="n">ymax0</span><span class="p">,</span><span class="n">vpx</span><span class="p">,</span><span class="n">vpy</span><span class="p">,</span><span class="n">zom</span><span class="p">)</span><span c