The Flash Render Options dialog box appears when you render a take with SWF (Flash) selected in the Output Format field.

Flash Render Options dialog box

This dialog box lets you add internal and external edges to your character, set the compression and frame rates, and select the Key Color for your .swf file.

During rendering, Internal and External edges do not show in the Render Preview window, however, they do appear in the rendered clip.

Flash versions 4.0 and higher can play the rendered .swf file.