a class that uses the built in (primordial) class loader, which is defined as null

a class with the primordial Class loader (which is null)

A class that the CIM Object Manager defines to support core features such as event notification, security, and localization. A system class is automatically defined in each namespace. A system class derives from the abstract base class __SystemClass.

HP's pricing structure for Traditional Licenses for VAX and Alpha systems. There are three System Classes: Enterprise, Departmental, and Workgroup. A Traditional License for a given System Class permits use of the Software on any single system model in the same or lesser System Class as identified on the chart.