Resizing a window, taller or shorter

• Move the mouse pointer to the upper edge of the Welcome Center window.  You will see that the mouse pointer changes shape to become a vertical line with an arrow on each end. Press down the left hand mouse button and while keeping it pressed, move the mouse pointer up or down. When you release the mouse button the window will be taller or shorter, depending on which direction you move the mouse pointer.  Experiment with resizing the window to make it taller or shorter.
  
  Also experiment using the bottom edge of the window.