VEOS is a research-oriented rapid-prototyping immersive VR system. It consists of a kernel and several subsystems that provide interfaces for design of the virtual world and its dynamic inhabitants. All objects and processes use the same entity model, which provides first-class environments and systems-oriented programming. Entities are programmed and managed by the FERN kernel-interface.

Detailed documentation is in the other VEOS sections. A bulleted overview and high-level descriptions follow:

The first VEOS Project article was published in Presence, the second longer version was published as a chapter in Virtual Environments and Advanced Interface Design. The Complex Systems piece was exploratory work with the Santa Fe Institute.

dav lion codesigned the VEOS implementation, and wrote two introductory user manuals that served to bridge the gap between world design and C code implementation.