Is InDesign CS4 extensible?
Yes. Developers can fully extend and automate InDesign CS4 using standard programming technologies including C++, JavaScript, AppleScript, and VBScript. The Adobe InDesign CS4 Products SDK is a software development kit that provides documentation, tools, and sample code to help customize and build InDesign plug-ins. For more information, visit the InDesign Developer Center. To learn about automating InDesign with scripting resources, see the scripting page.