Last scene actors are unique because they allow you to create smooth transitions between your scenes. A screenshot of the previous scene is contained within the actor's boundaries and can have properties, paths and effects applied to it.

 You can insert this actor through the main menu (insert --> last scene actor) or by right clicking on the 'Image' icon in the toolbar, Then clicking the Last Scene Actor icon.

To create a transition, simply insert the last scene actor into your scene and then add an 'effect' to it using actions. When the presentation is played Liquid Media will change to the next scene but the LSA will show an identical copy of what the last scene looked like, so the scene change will not
be noticable. Then the effects you have placed onto the LSA will cause it to smoothly disappear, revealing the true contents of your next scene.

"Paths" to set location, movement, timing and scale."
"Size" to set the width and height of your actor at any point along its path.
"Actions" control what the button does when Selected, Hovered, etc..
"Embellishments" to set shadows, alpha effects...