VERTICAL SCROLL BAR
                                              ┌─↑
                         Vertical scroll bar ─┤ █
                                              │ ▒
You can scroll through a document by          │ ▒
clicking the up and down arrows or by         │ ▒
dragging the scroll box.                      │ ▒
                                              │ ▒
To scroll one screen at a time, click         │ ▒
the gray area above or below the scroll       │ ▒
box.                                          │ ▒
                                              │ ▒
                                              └─↓