1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> 2<html lang="en"> 3<head> 4<title>aert1.0/5.5.1</title> 5</head> 6<body> 7<table summary="table summary"> 8 <caption>This table has an invalid summary (placeholder 'table summary')</caption> 9 10 <tr><td>1</td><td>2</td></tr> 11 <tr><td>3</td><td>4</td></tr> 12 13</table> 14</body> 15</html> 16