Unnecessarily divisive comma, and other wording, p.59

[Marc Stewart]

Rev. 788
Ch. 3, § "History", p. 59 (PDF p. 61)
Type: grammar/style

Manual has:
Click on one of the item categories in the sidebar to expand this category, and see the pages you’ve visited during that time period.

Category expansion and page seeing constitute the result of a single action—clicking an item—so shouldn't be separated by a comma when joined by "and". Also, "this category" is repetitive, and "item categories" can be more meaningful, while "you've visited" and "time period" can both be shortened.

Suggestion:
Click on one of the date categories in the sidebar to expand it, revealing the pages you visited during that period.