This file format contains four types of files, a database header file (.dhf), an OTF file (.otf), three network database files (.nw), and a single elevation map file (elevation_map). The Objective Terrain Format (OTF) is the runtime representation of the synthetic natural environment (SNE) for the US Army’s One Semi-Automated Forces (OneSAF) simulation software. Global Mapper’s OTF Reader Module is used by military personnel for mapping simulation exercises.
