ns. Values can be concatenated between commas, and those valid are:
				
				<table>
					<tr>
						<td width="100" align="right"><b>all</b></td>
						<td width="10"></td>
						<td>all Windows versions</td>
					</tr>
					<tr>
						<td width="100" align="right"><b>50</b></td>
						<td width="10"></td>
						<td>Windows 2000</td>
					</tr>
					<tr>
						<td width="100" align="right"><b>51</b></td>
						<td width="10"></td>
						<td>Windows XP</td>
					</tr>
					<tr>
						<td width="100" align="