| IConfiguration | Base interface for objects holding configuration data. |
| IPropertyDefinition | Definition of a property. |
| IPropertyDefinitionGroup | A group of property definitions. |
| IPropertyDefinitionManager | API for a property definition manager (PDM). |
| IPropertyManager | Define a property manager (PM). |
| IPropertyType | Base interface for property types. |
| IPropertyTypeBoolean | Define a boolean property type. |
| IPropertyTypeInteger | Define an bounded integer property type. |
| IPropertyTypePath | Specialized string property holding a file-system path. |
| IPropertyTypeString | Define a string property type. |