There are several things that carry the abbreviation PAL with them. The most famous is the one that has to do with the image you receive on the television: phase alternating Line. It is the colour television standard in most European countries. Usually you don't get to do this, but if you've worked with video editing software at home, you'll encounter it. Often, if you want to render the movie or burn it to DVD you have to take this standard into account (you make it for yourself, then PAL is the right standard. If it Is for a friend in America or Japan, you should use the NTSC standard.