Until now you either created HyperCard stacks or Macintosh applications. With WindowScript you can literally bring the look and feel of a real Macintosh user-interface to HyperCard. If you're a HyperCard developer, interface designer, application developer, program manager or tester searching for a prototyping tool, WindowScript is perfect for the job. AppleScript or any other OSA language is now supported in WindowScript.
Windows now have a new property entitled backdrop.
This property of the window may be set to the name of a picture in the stack which should act as the backdrop of everything else in the window. Double-XX requires that you supply the user interface for your application either by writing XCMDs or by using a tool like WindowScript. Public Domain and Shareware products do not require a fee, provided a standard splash screen is displayed. At least a MacPlus with System 6.05 and HyperCard 2.0v2. A color System 7 machine with QuickTime, HyperCard 2.2, and 2 megabytes RAM is recommended.