- Overview: Gain an overview of the entire collection.
- Zoom: Zoom in on items of interest
- Filter: filter out uninteresting items.
- Details-on-demand: Select an item or group and get details when needed.
- Relate: View relationships among items.
- History: Keep a history of actions to support undo, replay, and progressive refinement.
- Extract: Allow extraction of sub-collections and of the query parameters.
— The Eyes Have It: A Task by Data Type Taxonomy for Information Visualizations