Allow Lisp programs to stop implementing an ad-hoc, informally-specified, bug-ridden, slow implementation of less than half of ISO-Prolog.
          lisp          common-lisp          oop          prolog          lisp-interpreter          swi-prolog          swi-prolog-library          object-oriented-programming          prolog-programming-language          swi          lisp-compiler          yap-prolog          greenspun          prolog-programmers      
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            Updated
            Sep 28, 2021 
- Common Lisp