Define new class OPTIONAL-PARAMETER using generalized class as superclass.
Define new class OPTIONAL-PARAMETER using generalized class as superclass.

clasp-developers/SICL,vtomole/SICL,vtomole/SICL,clasp-developers/SICL,clasp-developers/SICL,clasp-developers/SICL,vtomole/SICL,vtomole/SICL