| BlockTransform | This interface represents a class that transforms a Block tree in some way. |
| BlockTransformContext | This class contains the necessary context to perform a given transformation on a Block tree, subtree or set of Block properties. |
| BlockTransformFactory | This class acts as a factory for Block Transforms (see BlockTransform). |
| BlockTransformScript | A Block Transform Script is a textual script that specifies how to transform a given Block tree. |
| BlockTransformExecutionFailure | If a transform fails in the process of manipulating a Block tree (subtree or set of Block Properties) than this exception is thrown. |
| BlockTransformScriptInvalid | This exception is raised in the process of parsing the transform "script". |