Most code editors are similar to notepad.exe in that they are "text editors", but unlike notepad.exe they have functionality built into them to send the code into the compiler.

What Happened: The tech giant’s plans for an AI-driven feature in Notepad are evidenced in the code of the latest Windows 11 test builds, according to a report by The Verge.

Was Notepad written to be a code editing platform? If so, "Notepad" seems like an odd name choice. I've only ever used Notepad to cleanly and completely strip formatting out of text.