headers="construct unicode"><tt>\p{Lu}</tt></td>
     <td headers="matches">An uppercase letter (simple <a href="#ubc">category</a>)</td></tr>

 <tr><td valign="top" headers="construct unicode"><tt>\p{Sc}</tt></td>
     <td headers="matches">A currency symbol</td></tr>
 <tr><td valign="top" headers="construct unicode"><tt>\P{InGreek}</tt></td>
     <td headers="matches">Any character except one in the Greek block (negation)</td></tr>
 <tr><td valign="top" headers="construct unicode"><tt>[\p{L}&&[^\p{Lu}]]&n