>One or more
      <a href="terminology.html#space" id="space_xref7">space characters</a>.</li>
      <li>Any
      <a href="terminology.html#case-insensitive" id="case-insensitive_xref7">case-insensitive match</a>
      for the string
      "<code>PUBLIC</code>".</li>
      <li>One or more
      <a href="terminology.html#space" id="space_xref8">space characters</a>.</li>
      <li>A <i>quote mark (public ID)</i>, consisting of either a
      "<code title="U+0022 QUOTATION MARK">"</code>"
      character or