Clockwork
green-Identifies vegetation with military significance, such as woods, orchards, and vineyards
brown-Identifies all relief features and elevation, such as contours on older edition maps, and cultivated land on red-light readable maps.
blue-Identifies hydrography or water features such as lakes, swamps, rivers, and drainage
red-Classifies cultural features, such as populated areas, main roads, and boundaries, on older maps
other-Occasionally other colors may be used to show special information. These are indicated in the marginal information as a rule.
Red-brown-Indicates cultural (man-made) features such as buildings and roads, surveyed spot elevations, and all labels.
Black-Indicates cultural (man-made) features such as buildings and roads, surveyed spot elevations, and all labels.