# About Wizard documents

A Wizard document is a collection of related tables and models. A complete list of a document’s objects always appears on the left side of the document in the navigator. A document contains tables; a table contains models; and a model contains predictions.

Wizard documents behave more like documents in office-productivity applications than like workspaces in traditional statistics programs. For example, you can undo any change to a document by choosing Edit > Undo. All charts and results appear directly inside in the document window.

Wizard documents have extension `.wizard`.

See also:

- About tables
- About models
- About the navigator

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