... scroll bars altogether. Your Page Up and Page Down keys let you scroll up and down, one screen at a time, without having to take your hands off the keyboard to grab the mouse. The Home and End keys, ... jumping directly to the top or bottom of your document (or Finder window). And if you've bought a mouse that has a scroll wheel on the top, you can use it to scroll windows, too, without pressing ... opened inner folder B, and you want to backtrack to outer folder A? In that case, just click the tiny button—the Backbutton —in the upper-left corner of the window (shown in Figure 1-9), or...