To cite package ‘undomanager’ in publications use:

Attali D (2026). undomanager: Manage the History of Any Object with Undo/Redo Operations. R package version 0.1.0.9000, https://github.com/daattali/undomanager.

Corresponding BibTeX entry:

  @Manual{,
    title = {undomanager: Manage the History of Any Object with
      Undo/Redo Operations},
    author = {Dean Attali},
    year = {2026},
    note = {R package version 0.1.0.9000},
    url = {https://github.com/daattali/undomanager},
  }