> > Well, Spad compiler is supposed to accept program only when it
> > can deduce that the program is type correct.  If Spad compiler
> > can not see that program is valid it should reject it.
> That's a good guideline for compiler.
> I'm assuming there's a lacking ability to assert:
>   Category1(T:Category2) has Category3

The 'knownInfo' function is supposed to handle that.  There are
also other functions with similar purpose.

                              Waldek Hebisch

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