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Re: Bawden's remarks on characters

    Yes, adding 23. to #/A to get #/X is a neat crock.  So is Kahan's
    SQRT algorithm.  The latter is somewhat contained, however, while
    the former is, I suggest, too much more pervasive.  Writing
    (CODE-CHAR (+ 23. (CODE-CHAR #/A))) is not that much more work,
    is clearer as to what is going on, and no less efficient when

All this is true, but did you really mean to suggest that writing that
is the right thing?  It sure doesn't help achieve portability, as MMcM
points out.  Maybe you weren't thinking very hard when you wrote this?