On the command line -dos140 creates a DOS-order DOS-formatted disk (.dsk extension) while -pro140 creates a ProDOS-order ProDOS-formatted disk (.po extension). There does not appear to be a way to create, for example, a DOS-order ProDOS-formatted disk with the command line. Since this capability exists in the GUI I presume there is a reason why a user would want to do this, so the capability should be offered in the CLI as well.