I like the Office app where you have Word, Excel, and PowerPoint in one program. But still you need to open files in different windows/tabs. Is it possible to m

I like the Office app where you have Word, Excel, and PowerPoint in one program. But still you need to open files in different windows/tabs. Is it possible to make files open in the same window/tab? So that you can work on two different files without any borders. This will be very close to real-world experience where you don't have any windows/borders to work on two different papers. What if we make a file itself as a window?