This command will change the default image map file into a format that's easier to use and redirect the output to the coords file.
这条命令将会把默认图像地图文件更改为更易于使用的格式,并将输出重定向到坐标文件。
It creates links from the image map to individual images of the planets using the AREA element with the map element, COORDS value, and SHAPE attribute.