And the convention for ctrl keystrokes has everything to do with ascii. And windows is abiding by an ascii convention, in that using SUB for EOF isn't breaking that convention.

What does ASCII sort actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

American Standard Code for Information Interchange. more commonly known as ASCII, is the standard for representing all upper-case and lower-case Latin letters, numbers, punctuations, etc as a code ...

Backspace (ASCII Code 08), Carriage Return (ASCII Code 13), Horizontal Tab (ASCII Code 09), and Line Feed (ASCII Code 10) are some examples of non-printable characters.