*empty-array-value*LISP value of [].
*empty-object-value*LISP value of {}.
*false-value*LISP value of false.
*from*Default value of from used by #'to-json.
*null-value*LISP value of null.
*octets*Default value of octets used by #'to-json.
*empty-array-value**empty-object-value**false-value**from**null-value**octets*