anchor.diff:       (:variable *print-readably*)
        (:variable *print-right-margin*)
        (:condition-type print-not-readable)
  -     (:function  print-not-readable-object)
  +     (:function print-not-readable-object)
        (:function format))
       ((23 "Reader")
        (:system-class readtable)
        (:function copy-readtable)
  -     (:function  make-dispatch-macro-character)
  +     (:function make-dispatch-macro-character)
        (:function read)
  -     (:function  read-preserving-whitespace)
  +     (:function read-preserving-whitespace)
        (:function read-delimited-list)
        (:function read-from-string)
        (:accessor readtable-case)
        (:function readtablep)
  -     (:function  set-dispatch-macro-character)
  -     (:function  get-dispatch-macro-character)
  +     (:function set-dispatch-macro-character)
  +     (:function get-dispatch-macro-character)
        (:function set-macro-character)
        (:function get-macro-character)
        (:function set-syntax-from-char)
        (:macro with-standard-io-syntax)
        (:variable *read-base*)
  -     (:variable  *read-default-float-format*)
  +     (:variable *read-default-float-format*)
        (:variable *read-eval*)
        (:variable *read-suppress*)
        (:variable *readtable*)
  
positive.code:      (:function copy-pprint-dispatch)
       (:macro formatter)
       (:function pprint-dispatch)
       (:local-macro  pprint-exit-if-list-exhausted)
       (:function pprint-fill)
       (:function pprint-linear)
       (:function pprint-tabular)
  
negative.code:      (:function hash-table-p)
       (:function hash-table-count)
       (:function hash-table-rehash-size)
       (:function hash-table-rehash-threshold)
       (:function hash-table-size)
       (:function hash-table-test)
       (:accessor gethash)
  