An object-oriented, concurrent, reflective language baSed on Hybrid Group Architecture. ABCL/R2 waS produced by Suhara@iS.S.u-tokyo.ac.jp>, Su@iS.S.u-tokyo.ac.jp>, S.S.u-tokyo.ac.jp>, S.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 aSScheduling policy, from within a uSer-program. ThiSSyStem haS almoSt all functionS of ABCL/1 and iS written in Common LiSp. . (1993-01-28)