nsf.c: - allow abbreaviated nonpos args - change name of relationslot "superclass" to "superclasses". (part of a planned change to use plu…
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nsf.c: - allow abbreaviated nonpos args - change name of relationslot "superclass" to "superclasses". (part of a planned change to use plural for setvalued parameters, "info superclasses" and similar changes for mixins/filters will probably follow)
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