what are the differences between 2 and 4?
2+2 = 2*2 = 2^2 = 4

): Each page of the electronic (PDF) version contains two pages, namely 1 and 2, 3 and 4, etc. with no way to get a good printout. I would see the difference in price as the cost for the company to provide a bound and printed version. And for this, I see it as a very unfriendly action to provide an "e-book" which neither can be printed neatly nor takes advantage of special "electronic" features as cross-references etc. I'm a bit disappointed (but not about your work, Vel, the biggest problems I saw in V3 disappeared).
), but for those who take a real pleasure to find everything themselves, VeL's guide is a spoiler (too good), a typical work of a fan.

at booksurge.
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