When you select a cell on the Structure Spec, it's properties are displayed and can be edited in this panel.

To edit a property, double click its current value.

Diagram properties:

• Name. Depending on the cell selected, this is either the name of an actual item (which you cannot change in the Structure Spec) or the name of a "wrapper cell" (which you can change).
• Description. A text field where you can enter a description for the cell.
• Visibility. This can be "public" or "private" - change it by double-clicking the current value. Private cells should only be used by other cells at the same scope. Dependencies on private cells from an outside scope will result in violations even if the dependencies flow downward. This is useful to differentiate between public (e.g. API) and private (e.g. implementation) sub-components.
• Background. The fill color for the cell.