these early issues had two faces. On one hand - the content - the attitude was all about tutoring newbies on the eldrich features of the machine. One the other, the code was almost convoluted. The routine that checked if the desired file was on the current disk had to read the disk header. Lord Help you if you tried to move anything to another disk. Also, every 1581/D81 needed a fix to that code. I don't remember exactly what I did when I did it, but it involved files on the disk named SIDE 1, SIDE 2, etc.
There were other ways things were done that we all finally moved around. But it is bad manners to crow about how much smarter we are today than way back when. Because, we are not.