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<p>Sets the plot window's title. </p>
<dl class="section user"><dt>Syntax</dt><dd><div class="fragment"><div class="line"><span class="keyword">subroutine </span>set_title(class(terminal) this, character(len = *) txt)</div>
</div><!-- fragment --></dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in,out]</td><td class="paramname">this</td><td>The terminal object. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">tx