Add custom features and functionality using Xtra extensions ??? part of the extensible Macromedia Director plug-in architecture. Create fully featured applications that can access, launch, and control other applications from within the Director executable. Create your own or choose from hundreds of existing Xtras to extend your work in any direction you can imagine. Learn how to create your own Xtras, or review a list of third-party Xtras that are already available.