In this list you can see all available document types. You can manage the items using the appropriate icon on the left-hand side of the page. Document types can be Edited (), Deleted () and Exported () .
Detailed information about document types and transformations can be found in Developer's Guide -> Development -> Document types.
Page url: http://devnet.kentico.com/docs/5_5r2/contexthelp/index.html?document_types_list.htm