6.2 Element Declarations

<!ELEMENT name content >

Content:

EMPTY
ANY
(...)
- #PCDATA--processed character data
- Elements
- Groups (...)

Modifiers

\|	choice of

,	sequence of

?	zero or one occurrences

*	zero or more occurrences

+	one or more occurrences

<!ELEMENT myml  (head? , body) >
<!ELEMENT head  (title , (meta | link)* ) >
<!ELEMENT title (#PCDATA) >
<!ELEMENT body  (p)* >
<!ELEMENT p     (#PCDATA | ul | br)* >
<!ELEMENT ul    (li)+ >
<!ELEMENT li    (#PCDATA | ul | br)* >
<!ELEMENT br    EMPTY >
<!ELEMENT meta  EMPTY >
<!ELEMENT link  EMPTY >

<myml>
<head>
   <title>A document</title>
</head>
<body>
  <p>Course options:
     <ul>
        <li>Some text</li>
        <li>A<br/>line break</li>
     </ul>
  </p>
</body>
</myml>

ANY allows text and any element of the DTD
#PCDATA must come first, if included in a choice list
#PCDATA cannot be used in a sequence
Mixed content refers to the combination of text and elements

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