t>\p{Lower}</tt></td>
     <td headers="matches">A lower-case alphabetic character: <tt>[a-z]</tt></td></tr>
 <tr><td valign="top" headers="construct posix"><tt>\p{Upper}</tt></td>

     <td headers="matches">An upper-case alphabetic character:<tt>[A-Z]</tt></td></tr>
 <tr><td valign="top" headers="construct posix"><tt>\p{ASCII}</tt></td>
     <td headers="matches">All ASCII:<tt>[\x00-\x7F]</tt></td></tr>
 <tr><td valign="top" headers="construct posix"><tt>\p{Alpha}</tt></td>
     <td headers="matches">An a