Source of comment.adp
<html>
<head>
<title>Comment Mechanisms</title>
</head>
<body>
The template system introduces no new mechanisms for comments.
You can use
HTML comments (<!-- users doing "View Page Source" will see this -->)
and Tcl comments (<%# but they can never look at that %>).
<br>
Neither are visible on the HTML page.
</body>
</html>