Saving Your Work Notepad doesn’t default to MD. Formatting works in TXT or just the plain unsaved tab. The bar responds to content, not just file type. When you try to use Save As, you'll see a ...

You edit code in one window and run and view it in another.<BR><BR>While you could code in notepad.exe, you miss out on auto-complete, intellisense, and syntax coloring among other things.

But if you're writing or editing source code, you're better off switching to a Windows Notepad alternative with more powerful tools. One such popular text editor app is Notepad++.