In Windows, you can arrange windows side by side, which can be especially helpful when comparing two documents or when moving files from one place to another.

Note: If you’re using a non-standard setup such as dual monitors, the tricks below may not work as expected.

Windows 7

1. Drag the title bar of a window to the left or right side of the screen until an outline of the expanded window appears.
2. Release the mouse to expand the window.
3. Repeat steps 1 and 2 with another window to arrange the windows side by side.

To return a window to its original size click the Maximize button in the window’s title bar and the window expands to full size.
 
The Maximize button

Tip: To snap an active window to the side of the desktop by using the keyboard, press Windows logo key+Left Arrow or Windows logo key+Right Arrow.
 
Viewing windows side by side in Windows Vista and Windows XP

In Windows Vista and Windows XP, it’s easy to display any two (or more) windows side by side on the desktop, all equally sized. Press and hold the Ctrl key and click two or more of the window buttons on the taskbar that you want to open. Release the Ctrl key, right-click, and then do one of the following:

* Windows Vista users, click Show Windows Side by Side.
* Windows XP, Tile Vertically command.