letter.dtd

PERL语言资料 可以用于PERL程序设计

<!-- Fig. 22.4: letter.dtd        -->
<!-- DTD document for letter.xml -->

<!ELEMENT letter (contact+, salutation, paragraph+, 
                  closing, signature )>

<!ELEMENT contact (name, address1, address2, city, state,
                   zip, phone, flag)>
<!ATTLIST contact type CDATA #IMPLIED>

<!ELEMENT name (#PCDATA)>
<!ELEMENT address1 (#PCDATA)>
<!ELEMENT address2 (#PCDATA)>
<!ELEMENT city (#PCDATA)>
<!ELEMENT state (#PCDATA)>
<!ELEMENT zip (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT flag EMPTY>
<!ATTLIST flag gender (M | F) "M">

<!ELEMENT salutation (#PCDATA)>
<!ELEMENT closing (#PCDATA)>
<!ELEMENT paragraph (#PCDATA)>
<!ELEMENT signature (#PCDATA)>

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