ActionScript for Flash MX: The Definitive Guide, 2nd Edition By Colin Moock
Chapter 18. ActionScript Language Reference
MovieClip.prevFrame( ) Method
Flash 5
send a clip or movie's playhead backward one frame and stop it there
mc.prevFrame()
Description
The MovieClip.prevFrame( ) method is an alternative to the global prevFrame( ) function. Use the MovieClip method form to control remote movie clips or main movies specified by mc.
For general usage instructions, see the global prevFrame( ) function.
Example
// Rewind slideshow_mc one frame and stop it slideshow_mc.prevFrame();