Regardless of where it ran, to the C64 user, at a command level, it looked and acted like an extension to BASIC. You can see some examples of the basic code her

Regardless of where it ran, to the C64 user, at a command level, it looked and acted like an extension to BASIC. You can see some examples of the basic code here: https://en.wikipedia.org/wiki/Commodore_DOS https://en.wikipedia.org/wiki/Commodore_DOS Apple ProDOS had similar stuff...