Notepad is Windows’ built-in text editor. At this point, I think the program has not been changed since… forever. And it shows.
Notepad is slow, it has almost no features, and generally people just pray until they’re done doing what they need to do just so they can close down that flaming pile of garbage.
As it happens, there’s a great all-purpose text editor you can download for free, and it’s WAAAAY better than Notepad.