# prosemirror-history [ [**WEBSITE**](https://prosemirror.net) | [**ISSUES**](https://github.com/prosemirror/prosemirror/issues) | [**FORUM**](https://discuss.prosemirror.net) | [**CHANGELOG**](https://github.com/ProseMirror/prosemirror-history/blob/master/CHANGELOG.md) ] This is a [core module](https://prosemirror.net/docs/ref/#history) of [ProseMirror](https://prosemirror.net). ProseMirror is a well-behaved rich semantic content editor based on contentEditable, with support for collaborative editing and custom document schemas. This [module](https://prosemirror.net/docs/ref/#history) implements an undo/redo history plugin for ProseMirror. The [project page](https://prosemirror.net) has more information, a number of [examples](https://prosemirror.net/examples/) and the [documentation](https://prosemirror.net/docs/). This code is released under an [MIT license](https://github.com/prosemirror/prosemirror/tree/master/LICENSE). There's a [forum](http://discuss.prosemirror.net) for general discussion and support requests, and the [Github bug tracker](https://github.com/prosemirror/prosemirror/issues) is the place to report issues. We aim to be an inclusive, welcoming community. To make that explicit, we have a [code of conduct](http://contributor-covenant.org/version/1/1/0/) that applies to communication around the project.