OptionalParameter-class: Classes "OptionalParameter", "OptionalMatrix"
Description
auxiliary classes; may contain either a Parameter or NULL, resp.
a matrix or NULL cf. J. Chambers, "green book".Objects from the Class
"OptionalParameter" is a virtual Class: No objects may be created from it;
"OptionalMatrix" is a class generated by setClassUnion()
so may contain NULL or any matrixMethods
No methods defined with class "OptionalParameter" in the signature.