Aha, but the whole point of these publications is that they present the information in a simpler form which is more easily understood.
During my time in electronics I have read circuit descriptions that are more like GCHQ cryptic puzzles and many that will make your eyes water. I have related the case of the younger amplifiers before as one example. The first JVC VHS video recorder had six microprocessors sprinkled throughout the machine all doing different control processes but they tagged them all as IC1 with no reference to which part of the circuit they lived in.
Technical drawings will be no different, only as good as the bloke that drew them and probably a different bloke that wrote the description.
Anyway, I'm on to chapter two now which is covering basic picture settings outside of the automatic modes.
![Smile :smile:](./images/smilies/smile.gif)