The Targets tab of the Generation dialog box allows you to specify additional generation targets, which are defined by extension files.
PowerDesigner provides many extensions, which can extend the object language for use with a particular server, framework, etc. You can modify these extensions or create you own. For information about attaching extensions to your model, see Extending your Modeling Environment.
The Generation dialog Targets tab groups targets by category. For each category, it is only possible to select one extension at a time.
For detailed information about editing and creating extensions, see Customizing and Extending PowerDesigner > Extension Files.