<informaltable>
<!-- Basic table with two columns -->
<tgroup cols="2" colsep="1" rowsep="1" align="left">
<colspec colname="c1"/>
<colspec align="center"/>
<thead>
<row>
<entry>Column 1</entry>
<entry>Column 2</entry>
</row>
</thead>
<tbody>
<row>
<entry>left aligned</entry>
<entry>centered cell</entry></row>
<row>
<entry>no specified width</entry>
<entry>idem</entry></row>
</tbody>
</tgroup>
</informaltable>