I have a template that contains the tag
<span id="regiongrid"><table></table></span>
as shown in the manual.
When the form is created in the browser this leads to
<span id="regiongrid">
<table id="regiongrid">
.....
</table>
</span>
This is flagged as an issue in the developers console as ids are meant to be unique. It doesn't stop the app working but thought I'd mention it.
And wow, how many tables are actually in the main table?