Beautiful! Thanks!
There is a thread buried somewhere about all many small things inside the game.
I have founded out that there are signatures on the inside walls of the station (designers, I guess).
They are visible only with camera pointing up, hidden from above. E.g. on the exposed parts of the ceilings of some larger object.
Try to catch growing plants on agricultural stations with camera deep under. Roots are growing, seeds are flying, leaves are falling and you can see irrigation drop by drop. Incredible.