DTD 信息定义了文档的结构。导出文件的 DTD 类似于下面的示例。
<!ELEMENT ENTITY (ENTITY* ADORNMENT*)> /* Entity element describes a entity. If it is a group, it may contain groups and adornment. */ <!ATTLIST ENTITY /* Entity attributes */ desc CDATA full_desc CDATA hostname CDATA ip CDATA netmask CDATA architecture CDATA family CDATA polling_type CDATA url CDATA x_coord CDATA y_coord CDATA topology_type CDATA event_dest CDATA trap_dest CDATA target_host CDATA target_ip CDATA read_info CDATA write_info CDATA> <!ELEMENT ADORNMENT> <!ATTLIST ADORNMENT x_coord CDATA y_coord CDATA type CDATA configuration CDATA> ]> |