Errata

In the scroll bars discussion about the new display "When Scrolling" option, it mentions that you can still use a regular mouse/trackball or keyboard with this new option.

In the paragraph above the tip, it says to use the mouse/trackball's scroll wheel to activate the scroll bar.

In the tip, it mentions using the keyboard's page-up page-down keys to scroll.

However, don't both of those only work for vertical scroll bars? What about horizontal scroll bars, which I frequently encounter in finder and other apps?

I did try this new "when scrolling" option with my trackball (with scroll wheel), but I don't see how to activate a horizontal scroll bar without using my MBP's trackpad in this mode. Is there a way to do so?

Thanks for the great book :-).

The paragraph says, "You can also move a window by dragging the solid gray strip on the bottom, assuming you’ve made it appear (choose View→Status Bar or View→Show Path Bar)."

However, View->Show Path Bar does not add the solid gray strip at the bottom. That is only added with View->Status Bar. At least that's the way it is working for me on Mavericks 10.9.5 on my MBP.