Be also added as options within 1by1 itself, as boxes in configuration / control / play?
Why do you need that? Starting a track or list from the beginning is always easily possible, isn't it?
Consider it a feature for your portable users, so we don't have to start 1by1using .bat files, which cause UAC warning dialogues, if we could do /r, /rt and /rd from within the program itself, it would avoid that. Just put it into Settings/System, there's an empty space in the lower left corner .
Or if not as a dialogue option, could you at least make it an 1by1.ini feature?
So we can avoid the .bat file UAC prompts in Windows 10, it hates batch files!