One is a PostScript file that can be used independent of all the other files. The usage of koh is fairly simple. Just run the program without any parameters for a list of possible options. For the syntax of the input file, refer to one of the examples. You may want to modify the PostScript file produced by the program.
All relevant options are at the top of the file.
DX and DY define width and height of one unit. If you plan to include the PostScript image into another document, remember to adjust the values of the BoundingBox, if you have changed the size of the image. Sometimes it may be necessary to adjust the positioning of the labels on the map as produces by the program. For instance, two labels may be unreadable because they are mapped to the same unit. The commands to draw the labels are at the end of the PostScript file.