HSPD Update: According to the system developer, revisions to the HSPD are projected to occur "two to three times a year" (Battle, 1988). Under this process of system maintenance and expansion, comments and proposed revisions or additions submitted by the user group will be evaluated by the "Keeper of the HSPD." It is intended that the Keeper alone shall decide what information will be included in the database and which submissions will be entered into the system, as "there are sometimes conflicting data and varying opinions to be considered, and in such cases, someone must make a final decision" (Battle, 1988). This strategy is intended to ensure centralized control over information content and quality by limiting the ability of users to affect system modifications. HSPD: Premise