1. Document Object Model Requirements

1.7 DTD Manipulation

1. [After Level 1] There will be a way to determine the presence of a DTD.
2. There will be a way to query declarations in the underlying DTD (if available).
3. [After Level 1] There will be a way to add, remove, and change declarations in the underlying DTD (if available).
4. [After Level 1] There will be a way to test conformance of all or part of the given document against a DTD (if available). (See Document Manipulation, item 3).