It defines an action to be performed when the main object starts running if Flip Navigation Style is selected. It is a Client Event that takes place before the Server Events (Start, Refresh and Load) and the ClientStart Event.
Since it is a Client Event, the possibilities and limitations are the same as for any other Client Event.
Code associated to the event.
//Call the tab where you want to start the application
It is important to note that, by default, the main Dashboards are shown as tabs. Therefore, if we have a Dashboard as a main object (with the default control type) and the navigation style property is set to Flip, the event executed will be the Tabs.Start event.