closed-model-library-collections.changed.md

• A Systems or Kernel Semantic Library collection read on a package-level usage answers what the model declares, exactly as on an instantiated object: p1.voids is [] and isSolid true, p1.suboccurrences the subsetting parts, p3.performedActions the performed action, p1.predecessors [], p1.middleTimeSlice null, where the Systems tier read <undetermined> and the Kernel tier answered; an abstract library collection of any kind (performedActions, a ref) holds its subsetters' values on both levels. <undetermined> remains for a usage whose own multiplicity the model leaves open, an unbound input, and a library collection whose lower bound nothing declared satisfies.