Skype 3.0 brings a few new terms to our VoIM glossary.

In this edition: extra, extras gallery, extras manager, plug-in manager, plug-in publishing studio, pxml, call transfer.

Extra. Skype's term for software or other products that work with Skype.

Extras Gallery. Skype's web directory of third party products. Skype is moving the Gallery from Paul's developer relations team to Skype's online store ecommerce team. 

Extras Manager. Skype 3.0 for Windows Beta client's view of a selected short list of extras. Extras in the Extras Manager may or may not be in the Gallery. Extras Manager extras may or may not be Skype Certified or even Skype Compatible. The Extras Manager is a retail zone, designed to sell stuff, and some vendors pay fees and commissions to Skype.

Plug-In Manager. New software that comes with Skype. It runs in the background as skypePM.exe. Programmers talk to it through an API. Users talk to it through the Extras Manager. At the moment, there is no user option for not automatically launching the Extras Manager or the Plug-In Manager.

Plug-In Publishing Studio. A tool that helps programmers package their extras for the Plug-In Manager. If you have C++ or java code laying around, the studio wraps it up properly with a "pxml" file for distribution by Skype. Not available for public download.

PXML. The Plug-In Manager reads this XML file format (example) to learn which text and pictures to show. After developers use the Plug-In Studio to describe their products, Skype writes the entries into a bigger pxml file with everything you'll see in the Manager. Skype is batch updating the clients weekly with a new pxml file, refreshing what Skypers see and where.

Call Transfer. This 3.0 feature is only available to programmers at the moment. This lets programs redirect a call to another Skype user or to a pool of Skype users. If to a pool, the first one to pick up gets the call. When a third party picks up the call, the transferrer is dropped from the call.