DOOR
The invention concerns a door that comprises a door frame (1), where the door frame (1) surrounds at least one surface or a space (2) that can be accessed through a slit in at least one side of the door, or in the end of the door, which slit makes it possible to carry out at least one of introduction and exchange of a decorative or informative sign (3) that is visible from at least one side of the door.