| Name | Description | |
|---|---|---|
  | HistoryUnitExpressionChangeFormat | Format string for expression changes. |
| HistoryUnitFieldsChange | Fields changed unit name. |
| HistoryUnitInsertNode | Description for the insert node history unit. |
| HistoryUnitPropertyChangeFormat | Format string for property changes. |
| HistoryUnitRemoveNode | Description for the remove node history unit. |