The image shows the ebMS custom document screen. The first area of the screen shows the following fields: Document Definition Name, Description, Definition, Root XSD Name, and Identification Type. The first area also shows the Apply and Revert buttons. The second area of the screen shows the following tabs: Flat, Apps, XPath, XML, Routing, and Correlation. The Flat tab is selected. The tab shows the following fields: Identification Start Position, Identification End Position, and Identification Value.