     <span class="returntype parameter">&#8594; void</span>
          </span>
                  </dt>
        <dd>
          Writes the character of <code>charCode</code>. <a href="dart-io/IOSink/writeCharCode.html">[...]</a>
                  <div class="features">override</div>
</dd>
        <dt id="writeln" class="callable">
          <span class="name"><a href="dart-io/IOSink/writeln.html">writeln</a></span><span class="signature">(<wbr>[<span class="parameter" id="writeln-param-obj"><span class="type-a