An object-oriented, concurrent, reflective language based on HYbrid Group Architecture. ABCL/R2 was produced bYYo.ac.jp>, Yo.ac.jp>, Yo.ac.jp>, <Yonezawa@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 in Common Lisp. . (1993-01-28)