Xtras' are plug-in applications (alternatively know as extensions, add-ons, or components) for Macromedia products (now owned by Adobe), in particular Adobe Director. They can be user-created, or bought from third party vendors. Adobe maintains a list of third party Xtras. Many of Director's own functions are implemented as Xtras.
Xtras are supported and available on the following products:
However, both Authorware and Freehand have been left in limbo by current owner Adobe, and Director always had the broadest support for Xtras (all of the three types of Xtras could be used).
Example Uses
Technical Aspects
Xtras use the Macromedia Open Architecture http://www.adobe.com/support/xtras/info/moa which was designed to allow easy creation of interchangeable components between Macromedia products.
Xtras for Win32 must have an .X32 file extension. Xtras for the Macintosh generally have an .XTR extension. The file extension *.X16 is reserved for Xtras for Win16.
Adobe's main Xtras page - http://www.adobe.com/products/xtras/ Freehand Xtras Development Kit - http://www.adobe.com/support/xtras/xdks/fhxdk
You can learn which Xtras are available in your copy of Director by typing ShowXlib in the message window.
External links
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