2.2. Customizing Movie Properties
Now that you have a version of the interface that suits your current needs (they may change over time, particularly when you start writing more ActionScript), it's time to talk about customizing your files.
The Stage's size determines the dimensions of your published Flash movie. The default Stage size is 550 x 400 pixels, but sometimes you'll want to work in other sizes. To learn how to change the dimensions, you'll set up a new file for the animation you'll create in the next chapter. It's usually a good idea to set the Stage properties before starting the animation, to avoid having to redo a lot of work later if you decide to change the document settings.
If you do need to change the Stage dimensions after you create a movie, keep in mind that the content doesn't scale or move during the process. Increasing the Stage's height adds pixels to the bottom edge of the Stage, and increasing its width adds pixels to the right edge. However, the content remains in its prior configuration, relative to the Stage's top-left corner.
Start by setting the Flash movie's properties: