Major Section: MISCELLANEOUS A ``check sum'' is an integer in
some fixed range computed from the printed representation of an
object, e.g., the sum, modulo the ascii codes of all the
characters in the printed Ideally, you would like the check sum
of an object to be uniquely associated with that object, like a
fingerprint. It could then be used as a convenient way to
recognize the object in the future: you could remember the check
sum (which is relatively small) and when an object is presented
to you and alleged to be the special one you could compute its
check sum and see if indeed it was. Alas, there are many more
objects than check sums (after all, each check sum is an object,
and then there's t). So you try to design a check sum algorithm
that maps similar looking objects far apart, in the hopes that
corruptions and counterfeits -- which appear to be similar to
the object -- have different check sums. Nevertheless, the best
you can do is a many-to-one map. If an object with a different
check sum is present