Point to any window border. You should see a double-headed arrow pointing out the directions in which you can size the window.
Drag the border to resize the window, and then release the mouse button. The window is now resized.
INTRODUCTION
If you want to see more of the window or less of the window, you can resize the window.
TIP
Resize from Corner
You can drag a corner of the window to proportionally resize both dimensions (height and width) at the same time.
TIP
Scroll Through a Window
If a window is too small to show all its contents, scrollbars appear along the edges of the window. Use these bars to scroll through the window and view the other window contents. Click the arrows to scroll in that direction or drag the box to scroll quickly through the contents.