Bernard S. Greenberg is a programmer and computer scientist, known for his work on Multics and the Lisp machine.
The success of this effort influenced the choice of Lisp as the basis for later versions of Emacs.
[5] While working at Symbolics, Greenberg implemented the Lisp machine File System (LMFS).
[7] NXSYS provides an interactive 3D view from the perspective of a New York City Subway motorman.
According to the online documentation, the NXSYS “relay language” is a subset of Lisp that describes subway track systems and control signal pathways; the subway simulation is actually run by the Lisp program, compiled by NXSYS, from the relay language source.