Well-renowned aid for teaching sentence-level grammar, punctuation, mechanics, and diction. The format is a thorough exercise workbook combined with a convenient reference handbook.
Perhaps my reaction to this text can best be summed up in one word: gyah. While the information is not incorrect, it is very confusingly (and humorlessly) stated and requires an instructor to interpret it. Frankly, if students were capable of understanding the text on their own, they wouldn't need to take the class in the first place.