     specific and use <tt class="LITERAL">?</tt> to match just individual characters. So <span class="QUOTE">"dir
      file?.text"</span> would match <span class="QUOTE">"file1.txt"</span>, <span class="QUOTE">"file2.txt"</span>,
      etc. We are pattern matching, using a similar technique to <span class="QUOTE">"regular expressions"</span>!</p>
      <p>Regular expressions do essentially the same thing, but are much, much more powerful. There are many more
      <span class="QUOTE">"special characters"</