On the other hand, if you have numeric names in the copath
you might not want to consider them to be class names.
Is it guarantee that at any point, {.copath 18!:5'' being the class from which
the object is conew-ed from? (assuming the object is indeed conew-ed from something)
BTW is "cocurrent" now redundant in J601?
I find uses for it, but maybe for your purposes it is redundant.
Eric said coextend=: coinsert is extra baggage. By the same token, so is
cocurrent=: coclass
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