No it's not! [Eek!]

The slackers that aren't up to speed would most likely not take the time to learn how to use UDFs and would not maintain their libraries. You would also have to have a whole series of incremental libraries for each previous version, not to mention that some added functionality cannot be duplicated with UDFs.

Better to have forced obsolesence. Beggars can't be choosers [Big Grin]
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.