Hi Nils, thanks a lot!
Regarding (b), I had intentionally put the 2 double quotes "" directly after the start command,
because I have already seen it happen (depending on the command to launch AND its arguments)
that the "start" command sometimes mistakes (!) its arguments for the window title. The safest way to avoid
that is to explicitly state a title (or, as I did, an empty one), even if that argument is optional (see start /? for info).
Regarding (b), I had intentionally put the 2 double quotes "" directly after the start command,
because I have already seen it happen (depending on the command to launch AND its arguments)
that the "start" command sometimes mistakes (!) its arguments for the window title. The safest way to avoid
that is to explicitly state a title (or, as I did, an empty one), even if that argument is optional (see start /? for info).