Yeah, remember good old Norton Commander (https://en.wikipedia.org/wiki/Norton_Commander) - not that newfangled clone Midnight Commander, the original? Or the Borland text mode IDEs (https://ilyabirman.net/meanwhile/all/ui-museum-turbo-pascal-...), complete with windows, menus, buttons, scroll bars, file dialogs etc. etc.?

Oh boy, that sent me down the memory lane hard. I also had to Google “Volkov Commander”, as that name sprung to mind immediately too.