> "The latter" is what the TeXbok says (P.~39) : "Once a category code > has been attached to a character token, the attachment is permanent."
Yes, because you meant individual tokens (which I understood in retrospect). But in the context of the discussion, you really seemed to be saying that you could not change the \catcode's of characters to be read, which was the point (not that there is much point left to the whole threads any more...) Arthur -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex