200e

I have just spent 4 hours on my 200e and find most of it quite intuitive.

There are many things that you will remember in your life . One for me
is turning the Buchla on and seeing all the lights! WHat a beautiful
sight!

Just 2 quick questions

I notice on the top panel/boat there are 2 rectangle holes about 3cm
long. What are they and is there a cover for them to stop dust getting in?

I really want to get the 2 snake lights for my system...Can someone
direct me as to what exactly I need to get plz