"Chain" Thread Search

Not long ago, there was a "chain" thread that included a post that
linked to a photo of a Wippermann chain showing the correct
orientation, as I recall. The idea was that some links, like the
connex, had to be installed facing the proper direction. I've looked
for that thread but can't find it. Would someone please steer me in
the right direction, or provide the information/link anew? Thanks.
--Roy Zipris