Perhaps, I'm not familiar with that but no matter. That we cannot see a function in some feature does not prove that therefore that feature was not designed, that's an appalling argument, we can find many examples of that today in our human designed world, I can look at umpteen machines and systems and see things that I really find no value in but that doesn't mean they weren't designed.
Look at the appendix, I was told in school in the 1960s that it serves no purpose, that's not what I
read today however.