Requirements and Availability of Application 
		Programmer's Interfaces for Virtual-Reality 
				Systems

This document lays out the needs and wants of users vs. available
systems.  The users are programmers of virtual-reality (VR)
applications in the department of computer science at the University
of North Carolina at Chapel Hill (UNC). The available systems are
commercial and academic application programmers interfaces (APIs)
for VR systems.

After reviewing the requirements and available systems, I will make
a recommendation on how the department should proceed to develop
its next-generation API.

Following my recommendation is a list of comments from various
people in the department on desired and important features of an
API. This is the list of comments that I boiled down to make the
requirements section.  The final section of this report is an
annotated bibliography of the papers from which I gathered information
for this report. It includes many papers that describe the systems
I have covered.