Nguage> ANobject-orieNted, coNcurreNt, reflective laNguage based oNHybrid Group Architecture. ABCL/R2 was produced by , , , Nezawa@is.s.u-tokyo.ac.jp>, at the {Tokyo INstitute of TechNology} iN 1992. As a reflective laNguage, aN ABCL/R2 program caN dyNamically coNtrol its owN behaviour, such as scheduliNg policy, from withiN a user-program. This system has almost all fuNctioNs of ABCL/1 aNd is writteN iNCommoN Lisp. . (1993-01-28)