u enter the name of a header file (e.g. <code class="language-c++ highlighter-rouge"><span class="n">strlib</span><span class="p">.</span><span class="n">h</span></code> or <code class="language-c++ highlighter-rouge"><span class="n">cctype</span></code>), Qt will display its contents. This is a quick way to review the features of a given library.</li>
  <li>You can also browse/search all library documentation online:
    <ul>
      <li><a href="https://web.stanford.edu/dept/cs_edu/resources/cslib_docs/" ti