<?xml version="1.0" encoding="GB2312"?>
<!-- services.xml的說明文件 -->
<!ELEMENT Smart (Users)>
<!-- 注冊用戶 -->
<!ELEMENT Users (User*)>
<!ELEMENT User (Basic, Optional, Friends, Shares)>
<!-- 基本信息 -->
<!ELEMENT Basic (ID, Nickname, Password)>
<!ELEMENT ID (#PCDATA)>
<!ELEMENT Nickname (#PCDATA)>
<!ELEMENT Password (#PCDATA)>
<!-- 可選信息 -->
<!ELEMENT Optional (Name, Gender, Birthday, Country, Province, City, Telephone, Email, Address, Postalcode, Homepage, Remark)>
<!ELEMENT Name (#PCDATA)>
<!ELEMENT Gender (#PCDATA)>
<!ELEMENT Birthday (#PCDATA)>
<!ELEMENT Country (#PCDATA)>
<!ELEMENT Province (#PCDATA)>
<!ELEMENT City (#PCDATA)>
<!ELEMENT Telephone (#PCDATA)>
<!ELEMENT Email (#PCDATA)>
<!ELEMENT Address (#PCDATA)>
<!ELEMENT Postalcode (#PCDATA)>
<!ELEMENT Homepage (#PCDATA)>
<!ELEMENT Remark (#PCDATA)>
<!-- 好友信息 -->
<!ELEMENT Friends (Friend*)>
<!ELEMENT Friend EMPTY>
<!ATTLIST Friend id CDATA #REQUIRED>
<!-- 共享信息 -->
<!ELEMENT Shares (Share*)>
<!ELEMENT Share (Friends*)>
<!ATTLIST Share file CDATA #REQUIRED>