The invention relates to a computer containing a RAM-based primary part with a stucturable RAM unit. The scheduler provides a layout view of the scheduled activities arranged according to activity type or status, a detailed layout of activities scheduled within a particular day or other time interval, and a drill down detail which provides activity specific reports such as logs and collection details about the scheduled activities. In conjunction with expansion of the tubing, the seal is deployed to form an annular isolator. The SCDL controls a clock frequency. A remote control is provided, so that the user can alter the status of the device without having to access the controller. This advantageous feature enables the recommender system to compare users and documents in order to generate recommendations.