XProc URL - Specifies the source XSL file that
the transformation will use. This URL is resolved through the catalog resolver. If the
catalog does not have a mapping for the URL, the file is used directly from its remote
location.
You can use the following browsing buttons to enter value in the XProc
URL:
Processor - Allows you to select the XProc engine. You can select
the built-in Calabash engine or a custom engine that is configured in the Preferences
dialog box.