if

<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. 18.11 Feature System Declaration
Module	iso-fs — 18 Feature Structures
Attributes	Global attributes only
Declaration	<rng:element name="if"> <rng:ref name="att.global.attributes"/> <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 { att.global.attributes, ( ( fs \| f ), then, ( model.featureVal ) ) }
Note	May contain a feature structure, followed by a feature value; the two are separated by a then element.
Contained by	vDefault
May contain	iso-fs: binary default f fs numeric string symbol then vAlt vColl vLabel vMerge vNot