# HistoryManagementMixin

Auto-generated from the @jbrowse/mobx-state-tree model in the source — see the [developer guide](https://jbrowse.org/jb2/docs/developer_guide/) for concepts. Built into JBrowse core. [View source](https://github.com/GMOD/jbrowse-components/blob/main/packages/app-core/src/HistoryManagement/index.ts).

Adds undo and redo of session changes to the root model, bound to Ctrl+Z
and Ctrl+Y (Cmd on macOS).

## Properties

| Member | Description |
| --- | --- |
| **history**<br><code>history: types.optional(TimeTraveller, { targetPath: '../session' })</code> | used for undo/redo |