 literal">out(color_map)</tt>.  There is no functional
difference between <tt class="docutils literal">out</tt> and <tt class="docutils literal">in_out</tt>; the library provides
both so you can make your interfaces more self-documenting.</p>
</div>
<div class="section" id="positional-arguments">
<h4>2.1.5.4&nbsp;&nbsp;&nbsp;Positional Arguments</h4>
<p>When arguments are passed positionally (without the use of
keywords), they will be mapped onto parameters in the order the
parameters are given in the signa