To certify book main:
cat cert.lisp | acl2
| README.html | this file | 
| cert.lisp | for certifying books | 
| declarations.lisp   | input axioms for "*"model | 
| inputs.lisp | input contraints for sequential model | 
| main.lisp | proof of main result | 
| packages.lisp | package definitions | 
| toy.rtl | RTL source | 
| And, the following automatically-generated files: | |
| constants.lisp | "*"model | 
| exec.lisp | "+"model | 
| model.lisp | sequential ( "ACL2") model | 
| pipe.lisp | edited slightly as shown |