    Return</span>
<span class="sd">    ------</span>
<span class="sd">    accmaxstep : str</span>
<span class="sd">        The maximum forecast step for the accumulated forecast fields.</span>
<span class="sd">    &#39;&#39;&#39;</span>
    <span class="k">if</span> <span class="ow">not</span> <span class="n">accmaxstep</span><span class="p">:</span>
        <span class="nb">print</span><span class="p">(</span><span class="s1">&#39;... Control parameter ACCMAXSTEP was not set.&#39;</span><span class="p">)</