Using Stepper Arrows

  Stepper arrows are the triangles that appear at each end of a
  scroll bar.

  To move the window one line in the direction of the stepper
  arrow, move the pointer to a stepper arrow and click MB1.

  This allows you to move through the data in the window at a
  pace that is easy to view.

  To move the window continuously in the direction of the
  stepper arrow, move the pointer to a stepper arrow.  Press
  and hold MB1.  This allows you to scroll through the data in
  a window at a faster pace.