New in 2020r1
The standard button used for web apps.
When the button is pressed or the Press method is called, the Pressed event is called.
The Default and Cancel properties can only be set to True for a single button each per page at any given moment. When either of these properties is True, the Indicator property is ignored as Default and Cancel buttons have a default indicator.
This code changes the Caption of a button between Start/Stop when you click it:
If Button1.Caption = "Start" Then
Button1.Caption = "Stop"
Button1.Caption = "Start"
WebSegmentedButton, WebToolbar classes; UserGuide:Web Button topic