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Title: Print out the source code yourself and read it.
Review: I am disappointed in the actual code commentary, it does NOT do a good job of explaining the code. Most of the time the commentary does nothing more than tell you what a function does - and it is obvious from the name anyway. Apache has a lot of standard programming conventions and internal libraries. I think those should have been covered first and in depth. It would make the Apache source code much more understandable. I read through the first chapter or so of Linux Core Commentary and it seems much more well written.
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