DVD 分区

大多光盘镜像文件都有RE， RF， 

RF 是 region.free.,

RE 同样是region.xxx

到底是什么呢， 

如下：

Region 1 - The U.S., U.S. territories and Canada 
Region 2 - Europe, Japan, the Middle East, Egypt, South Africa, Greenland 
Region 3 - Taiwan, Korea, the Philippines, Indonesia, Hong Kong 
Region 4 - Mexico, South America, Central America, Australia, New Zealand, Pacific Islands, Caribbean 
Region 5 - Russia (okay, former Russia), Eastern Europe, India, most of Africa, North Korea, Mongolia 
Region 6 - China 
Region 7 - Unused
Region 8 - Airlines, Cruise Ships

地图上的显示