Gantt APIPropertiesundoOn this pageundo Description Enables the Undo functionality for the gantt undo: booleanExamplegantt.config.undo = true;Default value: trueRelated samples Undo/Redo changes in Gantt DetailsnoteThis option is defined in the undo extension, so you need to enable the undo plugin. Read the details in the Undo/Redo Functionality article.Related API redo undo_actions undo_steps undo_types Related Guides Undo/Redo Functionality Change log added in version 4.0