lispdoc - results for clear-output

(clear-output &optional (stream *standard-output*))
Undocumented
 Mentioned in:
CLtL2 - 22.3.1. Output to Character Streams
HyperSpec - Function FINISH-OUTPUT, FORCE-OUTPUT, CLEAR-OUTPUT
Successful Lisp - chapter19
(trivial-gray-streams:stream-clear-output stream)
Function: This is like CL:CLEAR-OUTPUT, but for Gray streams: clear the given output STREAM. The default method does nothing.
  
(asdf:clear-output-translations)
Function: Undoes any initialization of the output translations. You might want to call that before you dump an image that would be resumed with a different configuration, so the configuration would be re-read then.
  
(clear-input &optional (stream *standard-input*))
Undocumented
 Mentioned in:
CLtL2 - 22.2.1. Input from Character Streams
HyperSpec - Function CLEAR-INPUT
Successful Lisp - chapter19