PHONOLOGY/MORPHOLOGY: a rule which does not change already specified
information. This rule just fills in information which is unspecified.
EXAMPLE: the feature [voice] is distinctive within the class of obstruents,
but non-distinctive in the class of sonorants. The latter fact can be expressed by
leaving [voice] unspecified for this class of sounds. In the course of a derivation
[voice] can be filled in by a structure-building rule. A property of
structure-building rules is that the input and output are non-distinct.
|LIT.||Archangeli, D. (1984)|
Kiparsky, P. (1982)