Tutorial > Working with DITA Maps > Using Column View > Opening and Closing the Hierarchy
  
Opening and Closing the Hierarchy
For this exercise, use the businessMeetings.ditamap document you modified in the previous exercise.
You can use the expand This graphic shows the expand control. and collapse This graphic shows the collapse control. controls in the Outline column to open and close parts of the map hierarchy.
Follow these steps to close some of the map hierarchy in the businessMeetings.ditamap document:
1. Click on the collapse control next to the Preparing for a Meeting topic.
That part of the map closes:
This graphic shows the closed topic in the map.
2. Click on the expand control next to the Preparing for a Meeting topic to reopen that part of the map.
3. Save businessMeetings.ditamap.
You completed map should look like this:
This graphic shows the completed map.
Using Column View