No, it is a widget which contains a button which creates and add the widget which contains the get text 0 function:
You overlap with the trigger. The game is paused. Widget called “WIN” gets added to the viewport. In “WIN” is a button called “BACK”. Whe you click “BACK” the widget “Worlds” gets added to the viewport. The get text 0 function is in “Worlds”
How all works:
When I start, the MainMenu Widget gets added to the viewport first. After clicking on the button Start in the Mainmenu Widget, the Worlds Wiget gets added to the viewport. Here is a button called World1. After clicking on the button world1 the Levels Widget gets added to the viewport. There are buttons which open different level in the Levels Widget. This is all. At the end of a level there is the trigger he does what I have written above.