The default value of a facet is rendered in the Facets view with a blue color. The facets that can't be edited are rendered with a gray color. The grouping categories (eg: Enumerations and Patterns) are not editable. If these categories contain at least one child they are rendered with bold. Bold facets are facets with values set explicitly to them.
Facets for components which do not belong to the current edited schema are read-only but if you double-click them you can choose to open the corresponding schema and edit them.
You can edit a facet by double-clicking on it or by pressing Enter, when that facet is selected. For some facets you can choose valid values from a list or you can specify another value. If a facet has an invalid value or a warning, it will be highlighted in the table with the corresponding foreground color. By default facets with errors are presented with red and the facets with warnings with yellow. You can customize the error colors from the Document Checking user preferences.
The Facets view has four toolbar actions available also on the contextual menu:
Facets can be fixed to prevent a derivation from modifying its value. To fix a facet value
just press the pin button.