Each area calculation standard is written in a separate module using .NET. Each .NET module includes the space calculation method as well as generating the space classification. In AutoCAD Architecture 2024 toolset there are 4 standards included: Basic, BOMA, SIS, and DIN-277. The .NET modules for BOMA, SIS, and SIN are in the folder \\AutoCAD Architecture\Space Calculation Standards\. The Basic standard .NET module is located directly in the application folder and should not be moved or deleted. Users can create and use their own standards.