Describes what the person is currently doing, expressed as an enumeration of activity-describing elements. A person can be engaged in multiple activities at the same time, e.g., traveling and having a meal. Describes the class of the service, device or person. Describes the mood of the presentity. Describes the type of place the person is currently at. Indicates which type of communication third parties in the vicinity of the presentity are unlikely to be able to intercept accidentally or intentionally. Designates the type of relationship an alternate contact has with the presentity. Designates the type of service offered. Designates the current state and role that the person plays. A URI pointing to an image (icon) representing the current status of the person or service. Describes the number of minutes of offset from UTC at the user's current location. Records the user-input or usage state of the service or device.