| Property | Description | Default Value(s) | Restrictions |
| Input (Input) |
The input from which the selection is extracted. | The selected object must be the result of the following: sources (includes readers), filters. The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet, vtkCompositeDataSet. |
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| Selection (Selection) |
The input that provides the selection object. | The selected object must be the result of the following: sources (includes readers), filters. The selected dataset must be one of the following types (or a subclass of one of them): vtkSelection. |