Real time operating systems are important for CNC machines and other industrial controls. Been a while since I kept up with Linux CNC and the open source control world, but I think this may have big implications for motion controls including printers.
This is why the big name CNC controls are mostly proprietary OS like FANUC, HAAS, Siemens, Mazak. Lot of them have Mitsubishi down in the guts. Heidenhain has Linux, at least in the top layer, iirc. Citizen had windows in the top layer.
Hay is generally cut from fallow fields in late summer/early fall. It contains sugars in the stalks as well as the seeds/grain of whatever grasses it is cut from. It is used to feed livestock year round and is the primary feed in winter. It is often supplemented by grain or feed.
Straw is basically an industrial byproduct and is the leftover stalk from grain harvesting. Usually produced from wheat after harvest. Used as bedding.