In the top right corner there is a x I want to remove it

I keep clicking the X button because its a habit I want to comepletely remove the X button In my editor In Unreal engine 4.27.2 How can I completely take away the x Full screening the editor did not work neither did any sort of app there was no tutorials either

Hey there @cat_master124! Welcome to the community! If you’re referring to the X in the top right hand corner, this is a core portion of almost every windows application. To even modify it would require changes to the source code of the engine. Which if you were savvy enough, you could do as the source code is available!