default - Default button
In order to show the button as default button within the field control, this option has to be set to on. Default buttons are marked, so that they can be easily distinguished from other buttons. When a field control containing a default button receives an unhanded enter event, the default button action will be called.
When more than one button within a field control have been defined as default button, only one button will appear as default button in the application.
Type: logical