ss="section-number">5.3</span> Internals of a simple <code class="fsharp"><a
   href="../reference/primitives.html#members.Parser"><span class="ci">Parser</span></a></code> function</span>
  </h1>
  <div class="intro i2">
   <div class="para _1">
    <p>
     In the beginning of this user’s guide we noted that <code class="fsharp"><a href="../reference/charparsers.html#members.asciiLower"><span
     class="ci">asciiLower</span></a></code> &#x201C;parses&#x201D; a lower case ASCII char and that <code class