[PD] Comport problem with Arduino: 13 comes in as 10

[Ingo]

Hi there!

I'm getting number 10 instead of 13 from my adruino.

I remember something that 13 is something like "end of line" or "carriage
return".
In some cases 13 was replaced by 10 for some sort of simplification - I
don't remember any more details.

What can I do to set up [comport] to output the correct numer 13 instead of
10?
There should be a setting for not treating it as a "modem" ...

Thanks!
Ingo