Unclear description of functionality of Arrow Up/Down in UG

[swxk19]

For Arrow Up/Down in the "Shortcuts" section of the UG, I was unclear of what was meant by "Navigate to the previous item on the list".
I was unaware that the 2 lists could be selected by clicking them (which I discovered through random clicking around), in order to navigate with the arrow keys.

Possible Improvement: Perhaps it could be mentioned somewhere in the UG that you can click on the lists to navigate them with the arrow keys