MIL-O-89102, MILITARY SPECIFICATION: OPERATIONAL NAVIGATION CHARTS (ONC) (31 JAN 1995) [SUPERSEDING PS/1AB/120].,This general specification defines requirements for the Defense Mapping Agency's (DMA) Operational Navigation Charts (ONC). The purpose of this specification is to assure uniformityof treatment among mapping and charting elements, primarily DMA and itscontractors, engaged in a coordinated production and maintenance program forthis product. Feature requirements are stated in terms of DMA'sFeature/Attribute Coding Standard (FACS), to maintain consistency betweenvarious DMA production methods. The use of FACS in this specification is notintended to imply any external digital data coding standard. FACS is theinternal coding standard used by DMA's Digital Production System (DPS), whichis the primary intended~but not exclusive, method for production of thisproduct at this time. The Digital Geographic Information Exchange Standard(DIGEST) Feature Attribute Coding Catalog (FACC), not FACS, is the approvedcoding standard for the exchange of digital geographic data, as well as thestandard for DMA's Vector Product Format (VPF) product line. FACC may beincluded in, or replace FACS in a future edition of this specification.