`<iNode>` | (intermediate (or internal) node) represents an intermediate (or internal) node of a tree.
Attributes: |
`label` | gives a label for an intermediate node.
| Datatype: CDATA
| Values: A character string.
| Default: #IMPLIED
`value` | provides the value of an intermediate node, which is a feature structure or other analytic element.
| Datatype: IDREF
| Values: A valid identifier of a feature structure or other analytic element.
| Default: #IMPLIED
`children` | provides a list of IDs of the elements which are the children of the intermediate node.
| Datatype: IDREFS
| Values: A list of IDs.
| Default: #REQUIRED
`parent` | provides the ID of the element which is the parent of this node.
| Datatype: IDREF
| Values: The ID of the parent node.
| Default: #IMPLIED
`ord` | indicates whether or not the internal node is ordered.
| Datatype: (Y | N)
| Legal values: |
`Y` | indicates that the children of the intermediate node are ordered.
`N` | indicates that the children of the intermediate node are unordered.
| Default: #IMPLIED
Note | Use if and only if `ord=partial` is specified on the `<tree>` tag and the intermediate node has more than one child.
`follow` | provides an ID of the element which this node follows.
| Datatype: IDREF
| Values: An ID of another intermediate node or leaf of the tree.
| Default: #IMPLIED
Note | If the tree is unordered or partially ordered, this attribute has the property of fixing the relative order of the intermediate node and the element which is the value of the attribute.
`outDegree` | gives the out degree of an intermediate node, the number of its children.
| Datatype: NUMBER
| Values: A nonnegative integer.
| Default: #IMPLIED
Note | The in degree of an intermediate node is always 1.

Example

    <iNode label=PT id=PT1 parent=VB1 children=up1 outDegree=1 follow=PN1>

Tagset additional tag set for graphs, networks, and trees
Class
Filename `teinet2`
Content: empty
Parents tree
Children[none]
Declaration

    <!ELEMENT iNode         - O  EMPTY                              >
    <!ATTLIST iNode              %a.global
              label              CDATA               #IMPLIED
              value              IDREF               #IMPLIED
              children           IDREFS              #REQUIRED
              parent             IDREF               #IMPLIED
              ord                (Y | N)             #IMPLIED
              follow             IDREF               #IMPLIED
              outDegree          NUMBER              #IMPLIED       >

See 21.2

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