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HLLAPI Programming (High Level Language Application Program Interface) - Use HLLAPI to 'remote-control' the QWS3270 Secure application. To use HLLAPI you need to be familiar with a programming language like C++, Visual Basic, or VBA.
COM / OLE Automation - The COM interfaces allow you to remotely execute many of the applications features. Get access to screen data, cursor location, field attributes, etc. You need to be familiar with a programming language or a script language like VB Script, Java Script, etc. The COM interface should be easier to use than HLLAPI.