Good book. It actually repeats macro references in 'SAS help' with some additions. So you can find all this information in 'SAS help' but I think that to have a book for your library is more convnient. It explains quite well how macro processor works behind the screen. This book contains more than enough information on various macro functions and it can help to prepare well to SAS advanced exam (macro part). I gave it 4 stars because some parts of the book are really difficult to understnd if you don't have previous experince with macro language. I recommend this book only to advanced SAS users.

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