Comment by JdeBP

Yes. In those days of long ago, I saw the .COM extension with my own eyes and ran QBASIC /EDIT directly just for kicks.

Once upon a time, this knowledge was one of those non-secret secrets that made it onto the letters pages of the computer magazines and into every "MS-DOS secrets" book out there. (-:

And yes, Windows NT 4 had the MS-DOS QBASIC.