Earlier quoted context omitted.
It was common back in the day for machines to ship with detailed technical documentation. I spent many an hour as a young child reading the C64 programmers reference guide, calculating the op speed and drawing memory maps. https://archive.org/details/c64-programmer-ref
What were you drawing memory maps for?
Also for my own games - you don't have pointers as such, you have your memory, and you need to know what lives where (and when it lives where).