chibi-scheme/lib/srfi/99.sld

(define-library (srfi 99)
  (import (srfi 99 records))
  (export make-rtd rtd? rtd-constructor rtd-predicate rtd-accessor rtd-mutator
          record? record-rtd rtd-name rtd-parent
          rtd-field-names rtd-all-field-names rtd-field-mutable?
          define-record-type))