<!-- comment -->
<digits>0123456789</digits>
<script>alert('Hello World!');</script>
<script lang="JavaScript">alert('Hello World!');</script>
<script lang="JScript">Response.Write("Hello World!");</script>
<script lang="VBScript">Response.Write("Hello World!")</script>
<script la>alert('Hello World!');</script>
<html>Hello World!/html>
<html>Hello World! <test /></html>
<html background='green'>Hello World! <test /></html>
<html background='green'>Hello World! <test /></html>
<html background='green'>Hello World! <test /></html>
<html background='green'>Hello World! <test /></html>
Known and &unknown; Entity
<html Unknown='Attribute' />