Understanding the start-up form

There is nothing wrong with the code. I’m just trying to undersand what i’m doing.

More precisely, my concern is about when the “homepage” object is created. In the previous tutorial(about the form) for example, we clearly had the submit button which calls the “button_1_click” function via the click event.

But with this tutorial, i just run the app without knowing how different elements are called. Is my question clearer ?

That’s the link : Anvil | Login