The principal system features defined for the Advanced Technology Space Station are summarized and the 21 pacing technologies identified during the course of the study are described. The descriptions of system configurations were extracted from four previous study reports. The technological areas focus on those systems particular to all large spacecraft which generate artificial gravity by rotation. The summary includes a listing of the functions, crew requirements and electrical power demand that led to the studied configuration. The pacing technologies include the benefits of advanced materials, in-orbit assembly requirements, stationkeeping, evaluations of electrical power generation alternates, and life support systems. The descriptions of systems show the potential for synergies and identifies the beneficial interactions that can result from technological advances. Butterfield, A. J. and Garn, P. A. and King, C. B. and Queijo, M. J. Unspecified Center SPACE STATION POWER SUPPLIES; SPACE STATIONS; SPACECRAFT CONFIGURATIONS; SPACECRAFT DESIGN; SPACECREWS; AEROSPACE VEHICLES; ARTIFICIAL GRAVITY; LARGE SPACE STRUCTURES; LIFE SUPPORT SYSTEMS; ORBITAL ASSEMBLY; SPACECRAFT CONSTRUCTION MATERIALS; STATIONKEEPING; SYSTEMS ENGINEERING...