DCW: Numerous Layers
The DCW comes on eight CD ROMs and is presented in 270 tiles that cover the world. A single tile is about the size of Pakistan; however, four tiles were required to make these maps because tile boundaries passed through Pakistan. In the following maps, layers were merged across the four tiles to create a legend with as few entries as possible. If, instead, it is prudent not to merge layers (in order to conserve hard disk space) , then the legend boxes will have many more entries (as in the corresponding hard copy maps in the notebook).