Since SlideShow 8 there is the possibility, to create and control templates and effects for pictures, videos and other objects using scripts. After activation the Developer mode (Extras / Developer mode) the Development environment can be opened via the menu Workspace / Panels / Scripting IDE. The scripting language is DelphiWebScript, which closely follows Delphi, but includes the advantages of scripting languages.
Documentation of the Scripting API
Detailed documentation can be found under Documentation of the Scripting API.