Different regions and countries employ different television broadcast systems that determine how television sets display the signal they receive. North America uses National Television System Committee (NTSC), while most of Europe and Asia uses Phase Alternating Line (PAL). A DVD recorded for PAL will not work on most North American DVD players. To address this problem, Computer Lab Management (CLM) has installed a region-free DVD player in the Hart Media Distribution Lab to allow access to foreign films. The unit (JVC XV S500) can play DVDs from any part of the world and supports both PAL and NTSC media. It also plays SVCD and Video CDs, thus increasing the types of media that can be viewed in the lab. The station has four sets of headphones for group viewing.