triangle

<triangle>

<triangle> (underspecified embedding tree, so called because of its characteristic shape when drawn) Provides for an underspecified eTree, that is, an eTree with information left out. 19.3 Another Tree Notation

Module

nets — 19 Graphs, Networks, and Trees

Attributes

In addition to global attributes

value

provides the value of a triangle, which is the identifier of a feature structure or other analytic element.

Status	Required when applicable
Datatype	<rng:ref name="data.pointer"/> data.pointer
Values	A valid identifier of a feature structure or other analytic element.

Used by

eTree forest triangle

May contain

core: label

nets: eLeaf eTree triangle

Declaration


<rng:element name="triangle">
<rng:ref name="att.global.attributes"/>
<rng:optional>
 <rng:attribute name="value">
  <rng:ref name="data.pointer"/>
 </rng:attribute>
</rng:optional>
<rng:group>
 <rng:optional>
  <rng:ref name="label"/>
 </rng:optional>
 <rng:zeroOrMore>
  <rng:choice>
   <rng:ref name="eTree"/>
   <rng:ref name="triangle"/>
   <rng:ref name="eLeaf"/>
  </rng:choice>
 </rng:zeroOrMore>
</rng:group>
</rng:element>

element triangle
{
   att.global.attributes,
   attribute value { data.pointer }?,
   ( label?, ( eTree | triangle | eLeaf )* )
}

Example

<triangle>
<label>NP</label>
<eLeaf>
<label>the periscope</label>
</eLeaf>
</triangle>

Note

An optional label followed by zero or more embedding trees, triangles, or embedding leafs.

P5: Guidelines for Electronic Text Encoding and Interchange

<triangle>