There's Tenex, and there's Tenex-TwoEndCarrier. What is a "carrier", and if it's a strand, how can it not have two ends? I don't have my rigging stuff here, but remembering, and seeing it mentioned in a video, it has a flat side and a round side. How is it braided to accomplish that? Going by memory, it's uniformly braided, but I could be misremembering.