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The 'Prompt User for Input' express VI (LabVIEW 2010) conveniently sets up the return and escape keys as shortcut keys for the OK and Cancel buttons if you want a 2-button dialog, but if you only want one button (OK), it doesn't get assigned a shortcut key, so you end up having to customize every such express VI . Surely it makes sense to retain the use of the return key to complete data entry in a 1 button dialog?