To activate a button in SPARQ using the Enter button on your keyboard, tab to the SPARQ button until it is highlighted and then hit the Enter button. The SPARQ button will activate and run its assigned operation.
For example, on the SPARQ Login screen, after entering your User ID and Password, hit the Tab button on your keyboard once to highlight . Next hit the Enter button on your keyboard. The LOGIN button will activate and log you into SPARQ.