raceways

So our HS auditorium is the process of being renovated (Finally!!!). The other day, they pulled down the raceways from the electrics (yep, everything was fixed) and asked us what we want to do with them. Since they had to pull them down on a scissor lift, we now have two raceways (40'ish, 2P&G...

I just began a new job at a different fine arts center. This is the fourth full-time auditorium position I've held, and yet I'm finding things that I've never seen. Such is this work, right? Anyway, the circuits on my raceways have me baffled. Can anyone help me decipher what's going on here...