Key is well used, well tested and the limit by disk not memory arrangement. I am not sure about the last bit. In 1970s they do have this issue and hence you h

Key is well used, well tested and the limit by disk not memory arrangement. I am not sure about the last bit. In 1970s they do have this issue and hence you have compiler that do multiple pass to handle limited memory. And there is no operating system to help, or there is no operating system (virtual memory, swapping, virtual machine come around that time …) wonder what is this application memory management scheme mentioned in the article is ? Overlay as in those days? https://en.wikipedia.org/wiki/Overlay_(programming) https://en.wikipedia.org/wiki/Overlay_(programming)