anchor.diff:                                 "C-t" #'make-buffer-focus
                                  "C-m u" #'bookmark-url
                                  "C-h v" #'describe-variable
  +                               "C-h f" #'describe-function
                                  "C-h c" #'describe-command
  +                               "C-h C" #'describe-class
                                  "C-h k" #'describe-key
                                  "C-h b" #'describe-bindings
                                  "C-o" #'load-file
  
positive.code:                                "C-t" #'make-buffer-focus
                                 "C-m u" #'bookmark-url
                                 "f1 v" #'describe-variable
                                 "f1 c" #'describe-command
                                 "f1 k" #'describe-key
                                 "f1 b" #'describe-bindings
                                 "C-o" #'load-file
  
negative.code:                                "C-o" #'load-file
                                 ;; TODO: Use "f1 *" instead?
                                 "C-h v" #'describe-variable
                                 "C-h f" #'describe-function
                                 "C-h c" #'describe-command
                                 "C-h C" #'describe-class
                                 "C-h k" #'describe-key
                                 "C-h b" #'describe-bindings
                                 ":" #'execute-command
  