|
|
Node = DocNode | ElemNode | AttrNode | ValueNode
| NSNode | PINode | CommentNode | InfoItemNode
string, boolean, ID, IDREF, decimal, QName, ...
| Ordered forests (lists) | [ T ] |
| Unordered forests (sets and bags) | { T }
|
| Disjoint unions | T1 | T2 ... | Tn |
ref(T)
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