<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>
Tagsetadditional tag set for graphs, networks, and trees
Class
Filenameteinet2
Content: empty
Parentstree
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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