Making a movie clip’s timeline play backwards smoothly instead of click-by-click should be easy, but instead it’s more difficult than wrangling a wild animal into submission. There’s no rewind( ) function unless you write one, and trust me, I’ve seen some messy customized ones and we don’t want to go there.
Instead we’re going to make a tricky little loop controlled by an invisible movie clip, as something of a controller for how long our back button continues to use prevFrame( ) to keep skipping backwards without the need for repeated clicks.
To start off, make sure that you don’t have anything selected on your stage, and then click Insert->New Symbol (Ctrl+F8) to create a new blank movie clip.
