Loading/unloading orders at signals — Steam Revolution: The Age of Rail Steam update #4044099

Loading and unloading specifications at signals have been reworked and simplified, now that multiple orders are allowed based on cargo type.The previous mechanics were extremely confusing because they tried to support multiple cargos before cargo-specific orders existed. This meant silos were especially confusing because they can act as both a source and destination for cargo. This meant that auto-determination of if a train should load or unload didn't work well. That layered on top of the mechanic that loading cargo didn't exclude unloading of cargo, which was needed if shared orders applied to two cargo types, so that you could unload the input to and industry and load the output, for example.The UI and icons relate to loading have changed to match the new mechanics. Load and unload are mutually exclusive now, when they weren't before, which caused lots of confusion. The signal menu n...