>(describe 'car)
CAR - external symbol in LISP package
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CAR [Function]
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CAR [Setf]
Defined as: (DEFSETF CAR (X) (Y) (LIST 'PROGN (LIST 'RPLACA X Y) Y))
See the doc of DEFSETF.
Error: Return type mismatch in call to SYSTEM:MATCH-END
Fast links are on: do (si::use-fast-links nil) for debugging
Error signalled by EVAL.
Broken at EVAL. Type :H for Help.
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