1. A method comprising: using a computer for analyzing an electronic file that is indicative of an image to determine at least one portion representing a texture in the electronic file; using the computer for determining a relationship between said texture, and a basic texture and determining a modification parameter indicative of said relationship between said texture in said electronic file and said basic texture; using the computer storing said texture and said relationship in place of at least a section of said file; and using the computer for defining a perimeter of said texture in the electronic file, and storing information indicative of said perimeter in place of said section of said file.