7.1 Well Formed and Valid Documents
 7.2 Binding DTDs to Documents
 7.3 Validating with SAX and DOM Parsers
 7.4 Element Declarations
 7.5 Attribute Declarations
 7.6 Notation Declaration
 7.7 Internal Entities
 7.8 External Parsed Entities
 7.9 Conditional Sections
 7.10 External UnParsed Entities