You can use a template to develop documentation plug-ins with DITA in Eclipse PDE, and use DITA Open Toolkit 1.3 to build and pack the final plug-in. If you want to develop a documentation plug-in with DITA in Eclipse, you cannot use the previous releases of the Toolkit in Eclipse to transform DITA to HTML. Although previous releases of the Toolkit support the feature to transform DITA files to an Eclipse documentation plug-in, they are not integrated with Eclipse. See Using a DITA template for Eclipse document plug-ins for more information.