View and Edit DTDs
The XMLSpy DTD editor supports intelligent editing and schema validation of DTDs in both Text and Grid View. Both views provide context-sensitive entry helpers and other editing guidance as you type.
If you prefer to work in a graphical view, Grid View displays the DTD in an easily recognizable tree structure that can be edited just like the hierarchical element structure of any regular XML document. In addition, attribute lists represented in a table view, which is ideally suited for this structure.