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After only 29 pages I found myself constantly asking “what is that, and when did the author define it?�. Additionally, there are enough oddly worded sentences that I am unable to follow what is being said. Perhaps I am not the intended audience for the book, but since Sulkin did not include a forward, I can’t tell. I am trying to use this as an initial guide to PBX, and find it lacking enought that I am now looking for another book.
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