| base.Base(name, system, **properties) | Abstract Base Class for all components, junctions, materials, subsystems, couplings and excitation. |
| base.LinkedList | Receiving Many part of One-to-Many link. |
| base.Spectrum([dtype]) | Class capable of containing spectral values. |
| base.Name | Unique Name descriptor. |
| base.Link | One-to-Many link from local to remotes. |
| base.MaterialLink | Linked from component to material. |
| base.ComponentLink | Link from subsystem to component. |
| base.JunctionLink | Link from coupling to junction. |
| base.SubsystemFromLink | Linked from coupling from to subsystem from. |
| base.SubsystemToLink | Link from coupling to to subsystem to. |
| base.SubsystemLink |
| base.NameWarning | Duplicate name warning. |
| base.MetaBase | Metaclass that prepares Base. |