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Re: Detecting whether a user-defined System Variable is in use [message #70264] Tue, 23 March 2010 21:29
penteado is currently offline  penteado
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On Mar 24, 1:09 am, "M. Katz" <MKatz...@yahoo.com> wrote:
> Besides writing an error trap, is there a sanctioned way to tell if a
> user-defined system variable has been defined?

defsysv,'!myVariable',exists=exists

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