ent</span></code>, if the field width
      specification is greater than 1.</li>
<li><code class="code"><span class="constructor">C</span></code>: reads a single delimited character (delimiters and special
      escaped characters follow the lexical conventions of OCaml).</li>
<li><code class="code">f</code>, <code class="code">e</code>, <code class="code"><span class="constructor">E</span></code>, <code class="code">g</code>, <code class="code"><span class="constructor">G</span></code>: reads an optionall