A and B. In Windows 7, Microsoft added a number of new Aero features, including Aero Peek, which lets you hover over a taskbar icon to show a thumbnail of the program, and Aero Snap, which causes a window to resize and to occupy different areas of the screen, depending on where you drag the window. Other features include Aero Shake and an improved Aero blur effect. Solution A and B. In Windows 7, Microsoft added a number of new Aero features, including Aero Peek, which lets you hover over a taskbar icon to show a thumbnail of the program, and Aero Snap, which causes a window to resize and to occupy different areas of the screen, depending on where you drag the window. Other features include Aero Shake and an improved Aero blur effect..