Overlays predefined city marks and labels onto your map as a reference.
Very important! Before you can use this successfully you will need to define the cities you want drawn by editing the file DIGATMOS.CIT with any text editor (such as Windows Notepad). The columns used are as follows:
1-2 Latitude of city in degrees
3-4 Latitude of city in minutes
5 N or S latitude sign
7-9 Longitude of city in degrees.
10-11 Longitude of city in minutes.
12 E or W longitude sign
14-33 Name of city as you want it to appear
The DIGATMOS.CIT file contains some default cities that are formatted per the above specifications, which you may find useful to refer to as a template when adding new cities.