Tip: A number of tips have talked about the need to not continue an agent if
the current form fails validation. People may not know the @IsValid formula,
which is used for this purpose. The line of code below says "If the form
passes validation, continue; if not, stop". The usually @Failure statements
will follow.
@If(@IsValid; ""; @Return(""));

This was first published in November 2000

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