n class='kw'>NULL</span>,
  <span class='kw'>duration</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>transition</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"linear"</span>, <span class='st'>"fly"</span>)
)</pre>

    <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
    <table class="ref-arguments">
    <colgroup><col class="name" /><col class="desc" /></co