Formal comment #174 (defect) No defaults given for sealed and opaque Status: closed (worksforme) Reported by: Andre van Tonder Version: 5.92 Pages : 15-18 Description In the explicit and implicit naming syntactic layers, it is not stated what the default values for sealedness and opaqueness will be if the corresponding clauses are absent. Suggestion Specify default values of #f for sealed? and (probably the safer option) #t for opaque? RESPONSE: The R5.92RS draft actually does specify defaults implicitly (non-sealed and non-opaque). The editors will attempt to clarify the wording.