Yeah.  So the user interface is uh i it uses the aspect uh of a computer system , a programme which can be seen or heard or otherwise perceived by the human user
and the commands and mechanism the user uses to control its operation and input data. So you s this gives you the ways to input data and we have uh  we are more  we emphasise more on the graphical user interface here. The idea is to represent buttons as figures , diagrams , symbols and on so you you can easily when you look at the symbols you understand what it is doing.
What's the function of this button.
Yeah. Yeah. So.