We had Smith equipment at the trade school I went to and all the Smith safety posters as well. When you have an acetylene manifold and students with no experience, you don't take safety for granted. Teacher was very experienced and even in technical school with a couple dozen experienced welders, none of them taught us to shut the acetylene off last.
I've never read a manual for any torch that tells you how to properly equalize a tip for welding either. They all tell you to set the gauges the same yet the most accurate way doesn't rely on the gauges at all. I guess they don't want to tell you their gauges aren't accurate.