And again, just like the last bunch of posts, you answer awaits you in the PBP manual...It's all about terminating the SERIN2/HSERIN input with an optional character...
It's in the book if you just take the time to look.
I understand what you're trying to do and as soon as you read the book, really read the book, the answer will show up...right in front of you...especially since you said that each line is ended with some sort of optional character, in your case, a line feed character.
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