>
    <tr>
      <th>raw_chars</th>
      <td><p>if <code>TRUE</code>, the character vector will not be parsed by
<code>mp()</code>, saving time (default: <code>FALSE</code>). the down-side is that the
strings must be formated for M2 use directly, as opposed to for <code>mp()</code>.
(e.g. <code>"x*y+3"</code> instead of <code>"x y + 3"</code>)</p></td>
    </tr>
    <tr>
      <th>code</th>
      <td><p>return only the M2 code? (default: <code>FALSE</code>)</p></td>
    </tr>
    <tr>
      <th>x</th>
    