 the element of ARRAY designated by its fill pointer
to NEW-ELEMENT, and increment the fill pointer by one. If the fill pointer is
too large, NIL is returned, otherwise the index of the pushed element is
returned.</div></blockquote>
<div class="section" id="lambda-list">
<span id="lambda-list"></span><h2>Lambda list<a class="headerlink" href="#lambda-list" title="Permalink to this headline">¶</a></h2>
<div class="highlight-cl notranslate"><div class="highlight"><pre><span></span><span class="p">(</span><sp