<!ELEMENT address_book (record+)>
<!ELEMENT record (name, address, contact, comments)>
<!ATTLIST record ID CDATA #REQUIRED>
<!ELEMENT name (first_name, middle_name, last_name, nick_name?)>
<!ELEMENT first_name (#PCDATA)>
<!ELEMENT middle_name (#PCDATA)>
<!ELEMENT last_name (#PCDATA)>
<!ELEMENT nick_name (#PCDATA)>
<!ELEMENT address (street_address, street_address_detail?, city, state, zipcode)>
<!ELEMENT street_address (#PCDATA)>
<!ELEMENT street_address_detail (#PCDATA)>
<!ELEMENT city (#PCDATA)>
<!ELEMENT state (#PCDATA)>
<!ELEMENT zipcode (#PCDATA)>
<!ELEMENT contact (home_phone, work_phone, cell_phone?, fax_number?, email_address?)>
<!ELEMENT home_phone (#PCDATA)>
<!ELEMENT work_phone (#PCDATA)>
<!ELEMENT cell_phone (#PCDATA)>
<!ELEMENT fax_number (#PCDATA)>
<!ELEMENT email_address (#PCDATA)>
<!ELEMENT comments (misc_comments)>
<!ELEMENT misc_comments (#PCDATA)>