Sometimes there are few lines of extra characters above on the Arduino Monitor page. They may look like remnants from previous runs, more or less garbled.
How to prevent them coming there?
This is not a major problem, not even a serious nuisance, but I am curious how they end up being there. When I send the output of Arduino to a host computer via usb for automatic analysis, and the host finds extra characters at the start, there is some extra work to bypass them. Better them not being there at all.
Thanks in advance!