document-type

Optional child of document.

(defclass document-type (leaf-node)
  ((root-element-name :accessor root-element-name)
   (system-id         :accessor system-id)
   (public-id         :accessor public-id)
   (internal-subset   :accessor internal-subset)))

Records what DTD the document claims to be following.

• STP checks for well-formedness, not validity.
• Internal subset only preserved as a string for serialization.
• Entities and notations not represented as objects. (Nobody cares.)
  • But documentation of cxml's entire DTD structure forthcoming.