The tag is very useful in halting processing in validation and authentication tests. When you use you usually need to display an error message along with it, and that usually requires some sort of format processing. One simple option is to use the SHOWERROR attribute which lets you specify an error message to be displayed when processing is aborted. The error message is displayed using the standard error page, so if you are using to display an alternate error page that will be used by . (Applies to: ColdFusion 4 (or later))

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