| BlockPropertyMacro | This interface defines the responsibilities of a Block Property Macro. |
| BlockPropertyMacros | This class manages a collection of macros that are used in the context of a
BlockRegistry. |
| BPMControllerParameter | This class implements a Block Property macro that can retrieve the value of a Controller Parameter. |
| BPMDescriptor | This class implements a Block Property Macro that expands localized descriptors. |
| BPMPreference | This class implements a Block Property Macro that retrieves the value of a Preference. |
| MacroAlreadyExists | An exception that indicates that the user is attempting to define a macro which already exists. |
| MacroDoesNotExist | An exception that indicates that the requested macro is not defined for this context. |