REQUIREMENTS: You will need either GNU, Allegro, CMU, or Lucid Common Lisp to run NESL. CMU and GNU Common Lisp are available for free. See the FTP site at ftp://ftp.ma.utexas.edu/pub/gcl/ for information on GCL, or email slisp@cs.cmu.edu for information on CMU CL. You will also need a Unix-like operating system (SunOS, AIX, HP-UX, Ultrix, Mach and Unicos work fine). For the full NESL release you will also need an C compiler, lex, yacc, and if you want the graphics routines, an X11 library. HOW TO BUILD NESL: The following steps should be sufficient to build a version of NESL to run on your local workstation. o Run "make" from the top-level NESL directory. This builds CVL, VCODE, and xneslplot, leaving "vinterp.serial" and "xneslplot" in the "bin" directory. o Start a Common Lisp in the top-level Nesl directory, and enter: (load "neslsrc/build.lisp") o Follow the instructions for dumping an executable version of Nesl. This will create a file "bin/runnesl", which can be executed directly to start up NESL. If you have problems, or for further details, see the user's manual in doc/user.ps.