HTML Tidy accessibility-check 1.0/13.10.1

This file demonstrates ascii art that is missing a skipover link

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html lang="en">
<head>
<title>aert1.0/13.10.1</title>
</head>
<body>
<pre>
  %   __ __ __ __ __ __ __ __ __ __ __ __ __ __
100 |             *                             |
 90 |                *  *                       |
 80 |          *           *                    |
 70 |             @           *                 |
 60 |          @                 *              |
 50 |       *        @              *           |
 40 |                   @              *        |
 30 |    *  @              @  @           *     |
 20 |                                           |
 10 |    @                       @  @  @  @     |
      0  5 10 15 20 25 30 35 40 45 50 55 60 65 70
      Flash frequency (Hertz)
</pre>
</form>
</body>
</html>