All FrameMaker structured applications require a structured template. Structured FrameMaker templates contain definitions of all the elements that can be used in the document as well as the document’s page layout and formatting.
Structured templates are like unstructured templates with the most obvious difference being the element catalog.
The element catalog displays the element definitions defined in the EDD. To create a structured document as a first step, you import the definitions from either an EDD or a DTD. The element definitions in an EDD or DTD are populated in the element catalog. You use the element catalog dialog to insert valid elements in your document and build a structure that complies with the rules in the EDD.