VSA

Downloadable software library, namely, computer software development tools that provide a framework for layering extensibility features on top of an existing application, including but not limited to wrapping of key semantic abstractions, exposing application lifecycle events via connection points that give users the ability to affect data processing and behavior, and a general facility for configuring and customizing the application in a dialect of the Scheme programming language that provides platform specific tools, techniques and methods for making select internals of an application broadly accessible and extensible to the application's end-users through scripting