NOTE element may contain...: accidentally got styled as code.
It should be normal text. In other words, it should look like this:
The
NOTEelement may contain an arbitrary amount of text. Some standard markup would be useful here. The easiest solution is to adopt the XHTML DTD introduced in Chapter 20, Reading Document Type Definitions. It's not necessary to rewrite it all. Simply use a parameter reference entity to import it. We'll allow eachNOTEto contain zero or moreREFERENCEelements and a single body element.<!ENTITY % xhtml SYSTEM "xhtml/XHTML1-s.dtd"> %xhtml; <!ELEMENT NOTE (REFERENCE*, body)>
Word's revision tracking is responsible for this one.