I worked the exercise and it was unclear whether “all the properties listed above” was to refer to the ones which I listed or the four which are given.

I would also suggest adding visual cues (such as a heavy horizontal line) for the boundaries to avoid reading ahead beyond (as opposed to 'seeing all of the current paragraph'), so that one can scroll down to the mark and not have to adjust further while reading. (Possible difference in experience: For me, it is quite hard to avoid skipping ahead in visible text, so 'not reading ahead' requires that I make the text invisible to me.)