sanction

"The motivation provided by a novel structure by the conventional units of a grammar. Full sanction involves an elaborative relationship (one of full schematicity between the sanctioning unit and target structure; partial sanction involves a relationship of extension (or partial schematicity, in which there is some conflict in specifications.) Although partial sanction implies some degree of ill-formedness, a considerable degree of nonconventionality is tolerated and even expected in actual language use.

2.1.4 10.1.1 11.2.2

(Cf. full sanction, partial sanction.)