Recently upgraded from a 2007 1500 SLT to the above. It came installed with what I found out later is bed utility rails that I have pictured below. My question is: What’s the purpose? How can I utilize them? Are there any accessories that I’m supposed to put on the rails? I tried to YouTube the question to visually see the different ways this might be utilized but I haven’t found one. I realize this may be a dumb question for some but I really wanna know how other owners make use of it. Thanks!