Welcome to the Sandcastle Help File Builder project.This project is composed of two separate parts that work together: the Sandcastle tools and the Sandcastle Help File Builder. The Sandcastle tools are used to create help files for managed class libraries containing both conceptual and API reference topics. API reference topics are created by combining the XML comments that are embedded in your source code with the syntax and structure of the types which is acquired by reflecting against the associated .NET Framework assemblies. Conceptual topics are created by converting XML documents that you author containing Microsoft Assistance Markup Language (MAML). The Sandcastle tools are command-line based and have no GUI front-end, project management features, or an automated build process.