Burst Autosubtracted FeatureKeyCreator \ Tools \ Feature \ Burst-Autosubtracted-Feature
Solid Features created as Feature Objects must be burst before they can be selected for modification (e.g., solid chamfer, extrude face, etc.). Feature objects contain additional data regarding thread representation and standards data accessed by the Detail>Autolabel function. Solid features are created by subtracting solid geometry from an existing solid body (or bodies).
Once a feature is burst, it will no longer retain any of its unique feature data, and the individual edges and faces will then be selectable.
NOTE: When creating features, you can choose whether to create them as Feature Objects or standard KeyCreator geometry via the Setup tab of any feature dialog box.