<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.
Attributes:
Example
Note

Tagsetauxiliary tag set for feature system declarations
Class
Filenameteifsd2
Content: May contain a feature structure, followed by a feature value; the two are separated by a <then> element.
ParentsvDefault
Childrenalt any dft f fAlt fs minus msr nbr none null plus rate str sym then uncertain vAlt
Declaration
<!ELEMENT if            - -  ((fs | f | fAlt), then, 
                             (%m.featureVal) )                  >
<!ATTLIST if                 %a.global                          >
See 26

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