[ELITISM]

Post something only your language can do. My contribution: I double dare you to do that in your language. Probably takes a fucking parser! javadocs don't count cuz its crap.

(defun print-package-documentation (package)
  "Lists package external symbols and prints
   their documentation"
  (let ((doc-types '(compiler-macro function method-combination
             setf structure type variable))
    undocumented)
    (do-external-symbols (s package)
      (let ((docstrings (remove-if-not #'identity
                       (mapcar (lambda (doc-type)
                         (documentation s doc-type))
                           doc-types))))
    (if docstrings
        (format t "~A: ~%~{  ~A~%~}" s docstrings)
        (push s undocumented))))
    (when undocumented
      (format t "The following symbols are undocumented:~%~{~A~^, ~}~%"
          undocumented))))

E.g.:

m1cr0p3n1z> (print-package-documentation :cffi)
FOREIGN-STRING-ALLOC:
  Allocate a foreign string containing Lisp string STRING.
The string must be freed with FOREIGN-STRING-FREE.
FOREIGN-SLOT-POINTER:
  Return the address of SLOT-NAME in the structure at PTR.
MAKE-SHAREABLE-BYTE-VECTOR:
  Create a Lisp vector of SIZE bytes can passed to
WITH-POINTER-TO-VECTOR-DATA.

...

The following symbols are undocumented:
LISP-STRING-TO-FOREIGN, FREE-TRANSLATED-OBJECT, CALLBACK, INCF-POINTER, EXPAND-TO-FOREIGN, FREE-CONVERTED-OBJECT, TRANSLATE-FROM-FOREIGN, CONVERT-TO-FOREIGN, WITH-FOREIGN-OBJECTS, EXPAND-FROM-FOREIGN, FOREIGN-POINTER, LOAD-FOREIGN-LIBRARY-ERROR, GET-CALLBACK, FOREIGN-SYMBOL-POINTER, DEFCALLBACK, DEFINE-FOREIGN-TYPE, EXPAND-TO-FOREIGN-DYN, USE-FOREIGN-LIBRARY, CONVERT-FROM-FOREIGN, FOREIGN-FUNCALL-POINTER, TRANSLATE-TO-FOREIGN
NIL

>>25
And what I'm saying is that by explicitly singling them out, you are effectively saying that "only" Lispers don't. But since you are going to generalize to all Lispers, I'm going to presume you conveniently forget things like Emacs and PLT, which are both documented pretty well.