More fun stuff added, but what Thunderdark is the item buffer actually for?
I get that there are 2 colours, 4 blue sides and 2 green sides. The colour of the sides that an item enters in determines which side of the GUI it comes into. But outputting (with an ejector upgrade), it can go into any side, including the one it's come from. You also can't change the colour of the sides (or at least not rotate them with a wrench), which leads me to believe that the item buffer has an intended use that I'm just missing, or that it's new and needs more work on.
Is it unfinished? Does it have an intended use, or is it designed to work for many things? And can you change which colours sides are?