That seems to be what Ralph is saying. The level of fidelity is way to fine for me to understand, though.
What I find interesting is that the book has been on the streets and well-touted for a long time, yet this is the first time this quesiton appears to have been asked. Similar thing happened to me with a technical publication and , boy, what a shock it was to realize that nobody noticed for years. Editing, proof-reading, and publication of technical materials is difficult even under the best of circumstances!