Table headings
Capture table headings using thead.
Column headings are often separated from the table body using a horizontal rule. Capture this using the rowsep attribute on the row element, with value "1".
Take care not to confuse bold text in a table with headings.
Example: a simple table head for a two-column table
<thead>
<row rowsep="1"><entry colname="col1">
<p>Assets</p></entry><entry colname="col2">
<p>Liabilities/equity</p></entry>
</row>
</thead>