When you create a new transformation scenario or edit an existing one, a configuration dialog box is displayed that allows you to customize the transformation with various options in several tabs.
The Inputs tab contains a list with the ports that the XProc script uses to read input data. Use the Filter text box to search for a specific term in the entire ports collection.
Each input port has an assigned name in the XProc script. The XProc engine reads data from the URL specified in the URL column.