aptures replacing their matches</td></tr>
<tr><td><a href="#cap-t"><code>lpeg.Ct(patt)</code></a></td>
  <td>a table with all captures from <code>patt</code></td></tr>
<tr><td><a href="#cap-string"><code>patt / string</code></a></td>
  <td><code>string</code>, with some marks replaced by captures
      of <code>patt</code></td></tr>
<tr><td><a href="#cap-query"><code>patt / table</code></a></td>
  <td><code>table[c]</code>, where <code>c</code> is the (first)
      capture of <code>patt</code></td></tr>
<tr