The Excellent Schemer.

The article discusses the rationale for making Scheme on .NET a first-class extension/automation language of the Office suite by way of a hands-on primer. It covers some basic facts about Scheme in reviewing the Visual Scheme for Applications (VSA) as a first-class language for user-defined function (UDF) development in Excel. It also explores the techniques around wrapping .NET libraries for use in VSA-powered Office solutions.