MACROMEDIA FIREWORKS MX 2004-USING FIREWORKS Use Manual page 230

To set animation settings using Export Preview:
Click the Animation tab.
1
Use the following techniques to preview animation frames:
2
To display a single frame, select the desired frame in the list on the left side of the dialog
box, or use the frame controls in the lower right area of the dialog box.
To play the animation, click the Play/Stop control in the lower right area of the dialog box.
Make edits to the animation:
3
To specify the frame disposal method, select the desired frame in the list and choose an
option from the pop-up menu (indicated by the trash can icon).
To set the frame delay, select the desired frame in the list and enter the delay time in
hundredths of a second in the Frame Delay field.
To set the animation to play repeatedly, click the Looping button and choose the desired
number of repetitions from the pop-up menu.
Choose the Auto-Crop option to crop each frame as a rectangular area, so that only the
image area that differs between frames is output. Selecting this option reduces file size.
Choose the Auto-Difference option to output only pixels that change between frames.
Selecting this option reduces file size.
230 Chapter 12: Optimizing and Exporting