\define tagtable(primary)
<table>
<tr><th>Primary</th><th>Secondary</th></tr>
<$list filter="[tag[$primary$]sort[]]" variable="ColA">
<tr>
<td><$link to=<<ColA>>><<ColA>></$link></td>
<td>
<$list filter="[tag[<<ColA>>]sort[]]" variable="ColB">
<$link to=<<ColB>>><<ColB>></$link>
</$list>
</td>
</tr>
</$list>
</table>
\end
<$macrocall $name="tagtable" primary='Contents'/>[tag[<<ColA>>]sort...
[tag<ColA>sort...