You save the expense of bringing the data up to standard. Points are used to depict point map features or symbols, and lines are used to depict linear features such as roads and rivers.
Polygons are map features which are depicted as areas such as lakes and swamps.
The geometric objects of point, line and polygon are linked to non-locational information which establish feature class and give other descriptive attribute information. Infrastructure layers containing road and rail networks, built up areas, aircraft facilities and localities Relief spot heights. Not all features shown on the printed map are included in the product. The Series 2 product incorporates two new data themes and many new layers and features in the existing Infrastructure, Hydrography and Relief themes. The key additions are the Vegetation theme, the Reserved Areas theme and contours layer.