an class="n">vars</span><span class="p">,</span><span class="n">F</span><span class="p">)</span>
    <span class="c">!! @note Interface for calculating the analytical electric and magnetic</span>
    <span class="c">!! fields for each particle in the simulation. @endnote</span>
    <span class="k">TYPE</span><span class="p">(</span><span class="n">KORC_PARAMS</span><span class="p">),</span> <span class="k">INTENT</span><span class="p">(</span><span class="n">IN</span><span class="p">)</span>      <span clas