Text Encoding Initiative

The XML Version of the TEI Guidelines

<leaf>

<leaf> encodes the leaves (terminal nodes) of a tree.
Attributes (In addition to global attributes)
label gives a label for a leaf.
Datatype: CDATA
Values: A character string.
Default: #IMPLIED
value provides the value of a leaf, 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
parent provides the identifier of parent of a leaf.
Datatype: IDREF
Values: The identifier of the parent node.
Default: #IMPLIED
follow provides an identifier of an element which this leaf follows.
Datatype: IDREF
Values: The identifier 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 leaf and the element which is the value of the attribute.
Example 
<leaf id="peri1" label="periscope" parent="n1"/>
Note

The in degree of a leaf is always 1, its out degree always 0.
Module Declared in file teinet2; Additional tag set for Graph Theory: enabled by TEI.nets
Data Description empty
May occur within tree
Declaration 
<!ELEMENT leaf %om.RO; EMPTY> 
<!ATTLIST leaf  
      %a.global;
      label CDATA #IMPLIED
      value IDREF #IMPLIED
      parent IDREF #IMPLIED
      follow IDREF #IMPLIED>
See further 21.2 Trees

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