Instruct: Classify a given review as either positive or negative.
Query: Unreadable charts

Unfortunately, the Kindle version charts are not readable even when enlarged. The typeface is too small in too many of the titles identifying the lines, hence many of the charts are useless. Even a magnifying glass doesn't solve the problem. The text is worth reading but you need a hard copy to read the charts. Too bad. I'd rate it a "5" if I could use the charts