Description
Use [color=yellow]V[/color] and [color=yellow]H[/color] (by default) to flip [color=green]loaders[/color]
When placing[color=green] loaders[/color] on the opposite side to the combinators, connect[item=medium-electric-pole]on both sides with [item=green-wire]
You can load mixed items. The train will just visit the requesters for each in order until it's empty. It's recommended to use a belt balancer if loading mixed items to disribute them somewhat evenly accross the buffer and train wagons.