Metadata elements The prolog elements represent metadata that is associated with a document. Most of these elements are valid in both topics and maps. Descriptive metadataThe descriptive metadata elements are children of the <metadata> element. They contain information that describes the content of the topic or map.Lifecycle management metadataThe lifecycle-management metadata elements are children of the <prolog> element. The contain information about the product lifecyle.Product information metadataThe product-information metadata elements are children of the <prodinfo> element. They contain information that provides additional details about the product.Parent topic: Element reference