Subj : Tossing/scanning seen-bys
To   : Alan Ianson
From : Rob Swindell
Date : Sun Apr 19 2020 06:29 pm

  Re: Tossing/scanning seen-bys
  By: Alan Ianson to All on Sun Apr 19 2020 02:40 pm

 > Hello All,
 >
 > Can anyone point me to any documentation around tossing/scanning and seen-by
 > and path lines?

Here you go, http://ftsc.org/docs/fts-0004.001

It doesn't use the word "toss", but that's just another word for "import".

.