Readers can swipe a finger to turn a page, zoom in and out by pinching fingers together or apart or write notes on the page or highlight text with a finger or the supplied stylus.

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In the study, more than half the students reported feeling frustrated when highlighting text and taking notes within e-books on the iPad.

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You can access that option by clicking the Menu button while reading, which makes it possible to take notes (albeit, sloppily written ones) directly on the text.

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He succeeded brilliantly: 114 detailed maps in line with the text, hundreds of margin notes, a header on every page showing time and place, and 11 appendixes that illuminate military, economic and political concepts of the time.

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And when handwriting just won't do, there's the Text Notes option, which lets you type your thoughts on the virtual keyboard -- which suffers all the sorts of stuttering lags we've come to expect from touchscreen E Ink keyboards.

ENGADGET: Sony Reader PRS-T2 review: same old e-reader, new and (mostly) improved design

Book notes are identified by the text at the top of the page you've scrawled on.

ENGADGET: Sony Reader PRS-T2 review: same old e-reader, new and (mostly) improved design