MIL-PRF-89049, PERFORMANCE SPECIFICATION: VECTOR PRODUCT FORMAT (VPF) PRODUCTS, GENERAL SPECIFICATION FOR (24 NOV 1998) [USE MIL-PRF-0089049 IN LIEU OF MIL-PRF-89049]., This specification defines the format for all National Imagery and Mapping Agency (NIMA) products based on the Vector Product Format (VPF). Feature and attribute requirements, and other information for individual products are contained in the associated specifications (see 2.2.1). Additional associated specifications are in development and will be added when approved. This specification provides a description of the content, accuracy, data format, and design of all vector format products. Conformance to this specification will assure uniformity of treatment among all production elements engaged in a coordinated production and maintenance program for these products.