Is there a command to halt the interpreter in Common Lisp?

Question

I\'m looking for an expression that will cause the interpreter to exit when it is evaluated.

I\'ve found lots of implementation-specific ones but none in the HyperSpec,

Answer 1

Since most Lisps import a quit function into CL-USER, CL-USER::QUIT is a good guess without knowing the implementation specific package where it is.

(cl-user::quit)

Note the two colons, since QUIT does not need to be exported from the CL-USER package.