Interactivity: A preservation information system, in accommodating a user base of various skills and capabilities, should have the capacity to define the degree of user interactivity. This would allow the application developer to control levels of penetration (level I, level II, etc.) into the information network according to user tasks and the complexity of the decision process. The levels of penetration might be determined according to levels of user responsibility. Annotation, commentary, and the risk of data corruption by unauthorized users could thus be eliminated. The use of simple password authorization represents at least a partial solution to this concern. Not only might passwords be required for system implementation, but appropriate user identification and date of access could be attached to marked decision paths and annotation nodes. User Perspectives Technology and Preservationists