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The NI TestStand User Interface (UI) Controls are a set of ActiveX controls that implement the common functionality for applications to display, execute, edit, save, and debug test sequences. These ActiveX controls greatly reduce the amount of source code a user interface application requires.
TestStand provides a comprehensive ActiveX Automation server application programming interface (API) for building sophisticated test management systems and other sequencing applications. Use the TestStand API to read and write data from TestStand properties, including TestStand sequences and steps, or to create, edit, run, and debug sequences. You can access the TestStand API from any programming environment that supports access to ActiveX servers.