You've probably heard that global variables are ``bad''
because they exist everywhere
and it can be hard to keep track of who's using them.
In the same way,
it can be useful to limit the scope of a local variable
to just the bit of the function that uses it,
which is exactly what happens
if we declare a variable in an inner block.
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This page by Steve Summit // Copyright 1995, 1996 // mail feedback