File Extension Glossary

http://www.gateway2000.com/support/custserv/glossary/fileformat/n.htm (Amiga Plus Extra No. 5, 08/1997)

*.ndx*		dBASE Index file format. Native format of several dBASE database index files which point to a field in the .dbf file.
*.nff*		Haines Neutral ASCII File Format. A minimal scene description language used to test rendering algorithms and efficiency schemes. It supports basic geometry of objects, surface characteristics, placement of lights, color of objects, and the viewing angle of the human eye.
*.nff*		WorldToolKit Neutral File Format. A creation of Sense8 for their WorldToolKit software product. a C language library providing the functionality needed to do virtual reality, including file parsing, sensor drivers, object management, behavior, and rendering.
*.nitf*		National Imagery Transmission Format. A collection of military standards documents.
*.ntx*		Clipper Index File format. Native database index file used by Clipper.