Frame card
In the context maps the extending cartographic representation over the entire card mirror and is of a rectangular or trapezoidal confined card frame. In contrast to this, the representation of an island map is limited to a defined area of terrain (e.g. a federal state) without including the spatial surroundings.
In official maps in particular, the map field is defined by geographic coordinates or the grid lines of a national coordinate system. The sheet cutting system results in the shape and area of the rectangular single sheets. In doing so, mapped elements are cut up at the edge of the map, but the sheets can be joined together seamlessly.