Access 1.1.12.1

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Access: [1.1.12.1]: ascii art requires description (Priority 1)

Cause:

Replace ascii art (illustrations created using keyboard symbols and characters) with actual images whenever possible. If the ascii artwork cannot be replaced, you must include an equivalent description to ensure the information is accessible to users who rely on audio-based and text-only browsers. A text equivalent is not required if the ascii image is explained in the document's content.

Example:

Bad
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html lang="en">
<head>
<title>aert1.0/1.1.12</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>
</body>
</html>

Solution:

References: