if

<if> defines a conditional default value for a feature; the condition is specified as a feature structure, and is met if it subsumes the feature structure in the text for which a default value is sought. «#FD»
Module	iso-fs
Attributes
Used by	vDefault
May contain	iso-fs: f fs then
Declaration	<rng:element name="if"> <rng:group> <rng:choice> <rng:ref name="fs"/> <rng:ref name="f"/> </rng:choice> <rng:ref name="then"/> <rng:group> <rng:ref name="model.featureVal"/> </rng:group> </rng:group> </rng:element> element if { ( fs \| f ), then, ( model.featureVal ) }
Note	May contain a feature structure, followed by a feature value; the two are separated by a then element.

Language Resource Management -- Morpho-syntactic Annotation Framework (MAF)