I have a printed copy of the TeXbook (from D.E. Knuth) at home. Now that I travel a lot, I don't want to take my library with me every time. Question: Is there a legal way to obtain (=purchase) a PDF ...
As I most often am not able even to ask the right question, much lesser to understand answers, I have decided to read thoroughly Knuth's TeXbook. But on Appendix B--Control Sequences--I find ...