Customoption. Some use cases are described later in this documentation.
https://a<your_app_id>.callbacks.bravostudio.app. Replace <your_app_id> with the Bravo app ID value (without the "<" and ">" characters). This can be found in the Bravo URL for your app: https://projects.bravostudio.app/apps/XXXXXXX/screens.
[page:login]in the top-level app page.
[action:login]in the UI element that will trigger the login action when pressing on it.