Based on NPR 1450.10D (for Classified) Section 8and NPR
1600.1 (NASA Security Program Procedural Requirements),
Section 5.24, and discussions with the NASA Taxonomy Team.
This vocabulary is not intended for designing systems. It
is intended to be used to mark individual information items
so that their access can be controlled properly when they
are moved between systems. For selecting the proper access
controls when designing information systems, see NASA NPR
2810 and NASA IS-SOP-0019B.