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Re: subtypep?

If you read far enough back in the notes.text files you will find
something about this.

The general idea is that PCL doesn't want to redefine existing functions
in Common Lisp.  So, what it does is define other functions with `similar'
names that can be used instead.

In the newest version of PCL, I believe there are functions called
PCL:TYPEP, PCL:SUBTYPEP and PCL:TYPE-OF which should do what you want.