KH> The whole purpose of FTS-9 was to enable threading in a standardized 
KH> way. Before FTS-9 there existed ^ATCL1/^ATCL2 and some other standards 
KH> for threading but they were replaced by FTS-9.

HS> Thats fine, but ADDRESSING is not required for THREADING. So why
HS> have the address?  You might as well take it out.

you CAN'T and keep the serial numbers unique across the entire
network(s)... you HAVE to have something else in there and the address
of the originating system was chosen because it allows you to keep the
serial number unique on the originating system...

)\/(ark