What's the deal with the new stake that came with the FG-12 fixture I picked up today as a sample? There's a clear window in the middle of the stake attached with a single SS screw. It doesn't come with any additional instructions about what to do with this compartment. It says CapannaDiNoce on it. I'm assuming it's for splicing, but do you use it? Or do you use whatever splice method you've been using and discard the clear window?