As Richard Ham's freight docks have shown us, it is possible to set up transfer points that will load a certain type of pre-defined cargo (a crate, for example) to any railcar that stops by.
That made me wonder... could it be possible to do it the other way around? I am thinking about a generic interactive loader ("transfer point"), one that would not load only one type of cargo, but literally ANY type of cargo -- whichever is included in the car's BIN file's "cargo component" section. In other words, a transfer point that triggers that car's "cargo component" when the T-key is pressed, no matter if that cargo is coal or a crate.
I did look into the BIN files, but all I could come up with so far was to technically replicate Dick's freight docks. At this point I'm really confused what else to do with the code in the BIN files.

Thanks!
Michael