Rated means a movie is censored, unrated logically means uncensored.
R1, R2, R3, R4, R5, R6 (Region Code):
A dvd is released in a certain geographical area, or region and it’s not viewable on a dvd player outside of that region. This was designed to stop people buying American dvd’s and watching them earlier in other countries, or for older films where world distribution is handled by different companies. A lot of players can either be hacked with a chip, or via a remote to disable this. The regions are:
Region 1 – U.S., Canada, U.S. Territories
Region 2 – Japan, Europe, South Africa, and Middle East (including Egypt)
Region 3 – Southeast Asia and East Asia (including Hong Kong)
Region 4 – Australia, New Zealand, Pacific Islands, Central America, Mexico, South America, and the Caribbean
Region 5 – Eastern Europe (Former Soviet Union), Indian subcontinent, Africa, North Korea, and Mongolia
Region 6 – Peoples Republic of China.