v.t. references or with as in "unit A imports unit B" or "sublibrary S imports sublibrary T"; . all units named in the context specification of a library unit (stated in its with clauses) and any supporting unit specifications introduced by the compiler, for example, the standard package SYSTEM. The imports of a secondary unit are all the units named in its context specification, any supporting unit requirements introduced by the compiler, its associated parent unit (if any), and the bodies of any generic specifications included among its other imports. The imports of a sublibrary are the all the sublibraries containing the imports of the units compiled in to that sublibrary. See sublibrary imports.