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Re: UPPER CASE & lower case

> Well, here is another novice question.
> I have to deal with a case in which both Upper case and
> lower case alterntion has a significant meaning. 
> For example, 'Cat', 'CAT', 'cat' and even 'cAt' have to
> be distinguished from each other. The obvious problem is
> that MCL does not recognize this difference. 
> Now what should I do to teach this silly machine to recognize
> 'T' instead of 't'.
> Any suggestion would be greatly appreciated.

Since you don't say which version of MCL you are using, I don't know if this 
will help you immediately, but see the function READTABLE-CASE in CLtL2 p.549, 
which is supported by MCL 2.0.