12. This chapter gives an overview to understand the data in volume 2 and volume 3.
13. Standards (their content) are defined and managed in their life cycle by standardization bodies with their own timetable. A standard may have life cycle status such as emerging, mature, fading, or obsolete. Different standardization bodies may use their own lifecycle status definitions. NISP takes lifecyle status of standards into account, but does not copy them into the NISP database. For aspects of obligation status for standards in planning and programmes, see the next paragraph.