Access: [5.5.2.1]: <table> missing <caption>
(Priority 2)

Cause:

Captions are used to describe the nature of the table in one to three sentences. Insert the caption below the table element. A caption is not always necessary. If a caption is not provided, use the "title" attribute to briefly describe the purpose of a table.

Testfile:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
	"http://www.w3.org/TR/REC-html40/loose.dtd">
<html lang="en">
<head>
<title>aert1.0/5.5.2</title>
</head>
<body>

<table summary="This simple data table has no caption.">

<tr><td>1</td><td>2</td></tr>
<tr><td>3</td><td>4</td></tr>

</table>
</body>
</html>

References:

W3C WAI: http://www.w3.org/WAI//
HTML Techniques for WAI 1.0: http://www.w3.org/TR/WCAG10-HTML-TECHS/