To perform operation similarly as at storage, at reproduction even when a screen including a window has been stored.

This information processor has: a window distinction means distinguishing whether an object displayed inside a screen of a display device is the window or not according to an taking-in instruction; an image acquisition means acquiring an image of the object distinguished that it is the window; a window information acquisition means acquiring window information related to the object distinguished that it is the window; a preservation means preserving the image of the window acquired by the image acquisition means and the window information acquired by the window information acquisition means; and a reproduction means reproducing the window based on the window information and the image of the window associatively stored in a storage means according to a reproduction instruction. The reproduction means controls the window according to window operation performed to the reproduced window.