Done. It doesn’t seem to have made a difference.
The opening code for the page is as follows (there are three similar uses of comments further down the page) and I appear to get a blank line for each of the lines of comment when the page is dislayed.
<!-- **************************************************************************** -->
<!-- ** Drama credits table ** -->
<!-- **************************************************************************** -->
<h1 style="text-align: center;">Drama</h1>
<table width="100%" border="1">
<tbody>
<tr>
<td>The Girl Who Ran Away</td>