Give your project structure with a DITA map.
Without a structure, your project is just a loose collection of topics. To provide this structure, follow these steps to create a DITA map. 
- Just as you do when creating a topic, click Create New. 

 
- Type of select Map.
 
- TItle your map and click Create & Edit.
 
- Beneath your map outline, in the pane on the left, click Open Library.
 
- Navigate to any of your existing topics that should go in the map.
 
Note:  The following step applies to concept, reference, and task topics.
Select a topic and drag it to your DITA map.  
- To save the map,  click Close Library at the top-right of the window, then click the X at the top-right of the window. Your DITA map will be saved with your other project assets.  
 
You have begun to structure your DITA project with a DITA map.