ts a neat representation of THING to DESTINATION.

DESTINATION can be one of the following types:
  (eql NIL)  --- The representation is printed and returned as a string.
  (eql T)    --- The representation is printed to *STANDARD-OUTPUT*.
  STREAM     --- The representation is printed to the stream.

THING can be one of the following types:
  RESTART      --- Restarts are presented as:
                     [NAME] REPORT
  CALL         --- Calls are presented as:
                     POS (CALL ARGS..)
  ENV