Uranus is free to use, copy and modify as long as it is used for research purpose only. Uranus provides absolutely no guarantee. Uranus is written in Common Lisp. How to Install Uranus: 1) Unpack files in a proper directory. 2) Copy proper Makefile-* file to Makefile. 3) Make. 4) Move Uranus object to a proper directory. File Descriptions: amuse.lisp editor *defs.lisp definitions of variables etc. *kernel.lisp Uranus kernel (most important part) lib.lisp library Lisp functions (must be changed for each lisp) *lispfunctions.lisp interface from Uranus to Lisp make-uranus.lisp creates a system image of Uranus manual.ps the manual *readin.lisp read-in macros *stepper.lisp stepper systempred.lisp Uranus system predicates *td.lisp term descriptions *trace.lisp tracer Files marked * are the minimum requirements for Uranus system. The author's e-mail address is nakashim@etl.go.jp