1. A method operating on a computer for mirroring an image according to internationalization information in an application supporting internationalization and images, the computer having a GUI, said method comprising: reading an initial image, described in a graphical format, to be mirrored; creating metadata comprising initial image data of the initial image and adding, for each area in which the image is split, information specifying whether the area is to be mirrored; reading the metadata and internationalization information from the GUI; and performing, by the GUI, mirroring of the image according to the internationalization information by applying the internationalization information to areas specified to be mirrored.