We felt that one way to make SIMPOL available would be to allow the calling of SIMPOL functions as if they were DLL calls. This could be useful for interacting with other Windows programs and would also assist existing Superbase users to gradually port their applications to the new language by allowing them to write new functionality in SIMPOL but still call the functions from the older Superbase language. In this part of the reference guide we will explore how to call SIMPOL functions and programs from Superbase (and other languages) as if they were DLLs.