Example 324
......

&nbsp &x; &#; &#x;
�
&#abcdef0;
&ThisIsNotDefined; &hi?;

......

<p>&amp;nbsp &amp;x; &amp;#; &amp;#x;
&amp;#987654321;
&amp;#abcdef0;
&amp;ThisIsNotDefined; &amp;hi?;</p>