XQuery Extensions
The Extensions button is used to specify the JAR and classes that contain extension functions called from the XQuery file of the current transformation scenario. You can use the Add, Edit, and Remove buttons to configure the extensions.
An extension function called from the XQuery file of the current transformation scenario will
be searched, in the specified extensions, in the order displayed in this dialog box. To change
the order of the items, select the item to be moved and click the Move up or
Move down buttons.