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<!-- The following DTD is a simple view of a book:
book
index
+
word
#PCDATA
page
#PCDATA
chapter+
comment?
#PCDATA
paragraph*
#PCDATA
summary?
#PCDATA
good
EMPTY
-->
<!ELEMENT summary (#PCDATA)>
<!ELEMENT book (index+, chapter+, summary?, author+, reviews?, available)>
<!ELEMENT reviews (#PCDATA)>
<!ELEMENT available EMPTY>
<!ELEMENT index (word, ref+)>
<!ELEMENT ref (page, line)>
<!ELEMENT word (#PCDATA)>
<!ELEMENT author (#PCDATA)>
<!ELEMENT line (#PCDATA)>
<!ELEMENT page (#PCDATA)>
<!ELEMENT chapter (comment?, paragraph*)>
<!ELEMENT paragraph (#PCDATA)>
<!ELEMENT comment (#PCDATA)>
|
