How to put a window screen in from inside?

If the window slides open from the inside do you put the screen in from the outside or inside?

• Answer:

  You put the screen on the outside, if the window slides open from the inside. A window is a transparent or a translucent opening in a wall or door that allows the passage of light and, if not closed or sealed, air and sound. Windows are usually glazed or covered in some other transparent or translucent material like a float glass.