While I know there's a way to do this, why are you doing this in the first place? Sure, it's easier to type out "$a" than "$form{'a'}", however, not only do you increase your memory requirements, you can also easily introduce errors because of it.
Mind you, there are some good reasons to do this, but this usually isn't the case 99% of the time.
Dr. Michael K. Neylon - mneylon-pm@masemware.com
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"You've left the lens cap of your mind on again, Pinky" - The Brain