not sharing any files, just how i built it, since this comes up constantly.

one line per entry, always the same shape: term, then page, then nothing else. if i could not compress an entry to a term i did not understand the thing well enough yet and that was the actual signal.

i only added an entry after i had failed to find something. not while reading. that meant the index was a record of my own gaps rather than a summary of the book, and it was maybe 35 pages in the end.

numbers went in, reasoning did not. deadlines, thresholds, limits, all in the index. anything requiring thought stayed on the page where i could read it properly.

tabs were three colours and i wrote what they meant on the inside cover, because in week two i had already forgotten.