t they do.
</p>

<section class="mt4">
  <h2 class="title-2" id="example">
    Word count example
  </h2>

  <p>
    Here is an example of a build rule. It takes in
    <code class="code">example/file.txt</code> from the source tree and counts
    the number of words within:
  </p>

  <pre class="code-container">
    <!-- prettier-ignore -->
    <code data-lang="plz">
    # //example:word_count
    genrule(
      name = "word_count",
      srcs = ["file.txt"],
      outs = ["file.wordcount"],
      cmd = "w