Fires when an open document transaction is undone.
| Name | Type | Description |
| DocumentObject | Document | The Document object that represents the document which was opened in an open transaction. |
| BeforeOrAfter | EventTimingEnum | Input EventTimingEnum indicating if the event is being fired after (kAfter) an open document transaction is undone. |
| Context | NameValueMap | Input NameValueMap object that can be used to determine the context of why the event fired. |
| HandlingCode | HandlingCodeEnum | Output HandlingCodeEnum that indicates how you are handling the event. The value of this argument is currently ignored for this event. |