Being a ^M "offender" I can tell you that the ax.25 and Uronode and
axMailFax software have no issues with said ^M characters in the axports
file. The blank line issue has been well known for years but to my
recollection, only for NetROM's nrports file. I (until yesterday) had a
blank end line on my axports file to no detriment.
Tom thank you for following your hunch, and hopefully we can get that
documented for the "fbb" script for us newby types.
Mitch