[25]>  (mop:class-slots (find-class 'hash-table))
NIL
[26]> (describe (find-class 'hash-table))

#1=#<BUILT-IN-CLASS HASH-TABLE> is an instance of the CLOS class #1=#<STANDARD-CLASS BUILT-IN-CLASS>.
Slots:
  CLOS::$HASHCODE                  = 209047793447548
  CLOS::$CLASSNAME                 = HASH-TABLE
  CLOS::$DIRECT-SUBCLASSES         = NIL
  CLOS::$DIRECT-METHODS            =
#1=#<WEAK-LIST (#<STANDARD-METHOD (#2=#<BUILT-IN-CLASS HASH-TABLE>)> #3=#<STANDARD-METHOD (#2# #4=#<BUILT-IN-CLASS STREAM>)>)>
  CLOS::$DIRECT-SUPERCLASSES       = #1=(#2=#<BUILT-IN-CLASS T>)
  CLOS::$ALL-SUPERCLASSES          =
#1=#S(HASH-TABLE :TEST STABLEHASH-EQ :WARN-IF-NEEDS-REHASH-AFTER-GC T (#2=#<BUILT-IN-CLASS T> . T) (#3=#<BUILT-IN-CLASS HASH-TABLE> . T))
  CLOS::$PRECEDENCE-LIST           = #1=(#2=#<BUILT-IN-CLASS HASH-TABLE> #3=#<BUILT-IN-CLASS T>)
  CLOS::$DIRECT-SLOTS              = NIL
  CLOS::$SLOTS                     = NIL
  CLOS::$SLOT-LOCATION-TABLE       = #S(HASH-TABLE :TEST FASTHASH-EQ :WARN-IF-NEEDS-REHASH-AFTER-GC T)
  CLOS::$DIRECT-DEFAULT-INITARGS   = NIL
  CLOS::$DEFAULT-INITARGS          = NIL
  CLOS::$DOCUMENTATION             = NIL
  CLOS::$LISTENERS                 = NIL
  CLOS::$INITIALIZED               = 6
  CLOS::$PROTOTYPE                 = #S(HASH-TABLE :TEST FASTHASH-EQ :WARN-IF-NEEDS-REHASH-AFTER-GC T)

 209047793447548 is an integer, uses 48 bits, is represented as a fixnum.

 HASH-TABLE is the symbol HASH-TABLE, lies in #<PACKAGE COMMON-LISP>, is accessible in 28 packages ASDF, CLOS, COMMON-LISP, COMMON-LISP-USER,
 EXPORTING, EXT, FFI, POSIX, QL-BUNDLE, QL-CDB, QL-CONFIG, QL-DIST, QL-DIST-USER, QL-GUNZIPPER, QL-HTTP, QL-IMPL, QL-IMPL-UTIL, QL-INFO,
 QL-MINITAR, QL-NETWORK, QL-PROGRESS, QL-SETUP, QL-UTIL, QUICKLISP-CLIENT, READLINE, REGEXP, SCREEN, SYSTEM, names a type, names a class, has
 8 properties CLOS::CLOSCLASS, SYSTEM::DOC, SYSTEM::SUBTYPEP-DECIDE, SYSTEM::SUBTYPEP-SIMPLIFY-OR, SYSTEM::SUBTYPEP-SIMPLIFY-AND,
 SYSTEM::SUBTYPEP-LIST, SYSTEM::SUBTYPEP-ATOM, SYSTEM::TYPE-SYMBOL.
 For more information, evaluate (SYMBOL-PLIST 'HASH-TABLE).

  #<PACKAGE COMMON-LISP> is the package named COMMON-LISP. It has 2 nicknames LISP, CL.
  It imports the external symbols of 1 package CLOS and exports 978 symbols to 27 packages QUICKLISP-CLIENT, QL-BUNDLE, QL-DIST-USER,
  QL-DIST, QL-CDB, QL-GUNZIPPER, QL-MINITAR, QL-HTTP, QL-PROGRESS, QL-NETWORK, QL-IMPL-UTIL, QL-IMPL, QL-CONFIG, QL-SETUP, QL-UTIL, QL-INFO,
  ASDF, READLINE, REGEXP, POSIX, EXPORTING, FFI, SCREEN, CLOS, COMMON-LISP-USER, EXT, SYSTEM.

 Documentation:
 SYSTEM::FILE:
 (((SETF FIND-CLASS) #P"/build/buildd/clisp-2.49/debian/build/clos-class3.fas" 2621 2671))

 NIL is the empty list, the symbol NIL, lies in #<PACKAGE COMMON-LISP>, is accessible in 28 packages ASDF, CLOS, COMMON-LISP,
 COMMON-LISP-USER, EXPORTING, EXT, FFI, POSIX, QL-BUNDLE, QL-CDB, QL-CONFIG, QL-DIST, QL-DIST-USER, QL-GUNZIPPER, QL-HTTP, QL-IMPL,
 QL-IMPL-UTIL, QL-INFO, QL-MINITAR, QL-NETWORK, QL-PROGRESS, QL-SETUP, QL-UTIL, QUICKLISP-CLIENT, READLINE, REGEXP, SCREEN, SYSTEM, a
 constant, value: NIL, names a type, names a built-in foreign type, has 2 properties SYSTEM::INSTRUCTION, SYSTEM::TYPE-SYMBOL.
 For more information, evaluate (SYMBOL-PLIST 'NIL).

  #<PACKAGE COMMON-LISP> [see above]

  NIL [see above]

 #1=#<WEAK-LIST (#<STANDARD-METHOD (#2=#<BUILT-IN-CLASS HASH-TABLE>)> #3=#<STANDARD-METHOD (#2# #4=#<BUILT-IN-CLASS STREAM>)>)> is a list of
 GC-invisible pointers to #1=#<STANDARD-METHOD (#2=#<BUILT-IN-CLASS HASH-TABLE>)>,
 #1=#<STANDARD-METHOD (#2=#<BUILT-IN-CLASS HASH-TABLE> #3=#<BUILT-IN-CLASS STREAM>)>.

 #1=(#2=#<BUILT-IN-CLASS T>) is a list of length 1.


 #1=#S(HASH-TABLE :TEST STABLEHASH-EQ :WARN-IF-NEEDS-REHASH-AFTER-GC T (#2=#<BUILT-IN-CLASS T> . T) (#3=#<BUILT-IN-CLASS HASH-TABLE> . T)) is
 an STABLEHASH-EQ hash table with 2 entries.

 #1=(#2=#<BUILT-IN-CLASS HASH-TABLE> #3=#<BUILT-IN-CLASS T>) is a list of length 2.

 #S(HASH-TABLE :TEST FASTHASH-EQ :WARN-IF-NEEDS-REHASH-AFTER-GC T) is an FASTHASH-EQ hash table with no entries.

 6 is an integer, uses 3 bits, is represented as a fixnum.

[27]>