anchor.diff:             #:remote-warning
              #:remote-warning-msg
              #:remote-warning-code
  +           #:remote-error
              #:remote-error-type
              #:remote-error-msg
              #:remote-error-code
  
positive.code:            #:add-result)
    ;;; Things that extensions might use.
    ;; Standard objects.
    (:export #:rpc-call-p
             #:rpc-call-service
             #:rpc-call-id
             #:rpc-call-method
  
negative.code:            #:remote-warning
             #:remote-warning-msg
             #:remote-warning-code
             #:remote-error
             #:remote-error-type
             #:remote-error-msg
             #:remote-error-code
  