When we complete writing code, the next step is compiling it. This ensures that the program is correct and working. To compile, select 'test movie' from the control menu. (02 Tip: instead of using the menu, simply press Control/Command-Enter.) A new panel opens up and streams the video. But this requires the right procedure to make sure that the movie is played. One must also remember that if only one files is open (main.fla for instance) then the same file is compiled. But when multiple files are open and you're in some other file, then the compiler compiles the file which is specified in 'Target' (found at the top right of the .as file.)