The following steps show you how to add a DITA import file, which is used to import DITA file content into a project.
How to add a DITA import file to a project
Select Project>Import File>Add DITA Import File.
The Add DITA Import File dialog opens.
In the Template Folders area, select one of the folders.
The Templates section to the right displays the DITA import file templates contained in the folder you selected.
Click Add. The import file is added to the Imports folder in the Project Organizer.
The DITA Import Editor opens to the right.
After you add the new import file, you can create topics by importing DITA file content into the project. See Creating Topics by Importing DITA File Content.