text: Figure 12.4 Creating a Discussion Thread 
  
  Note the new comment in the Comments view and the update in the Project Feed view. The Comments 
  view captures comments made on any entity in the ontology. The Project Feed view captures each change 
  made to the ontology. 
  
  To see what threaded discussions look like click on the new comment and select Reply. Add a comment 
  like: I agree, ChicagoPizza is awesome and deserves its own class. 
  
  Let’s address this comment by creating a new subclass of NamedPizza. Select NamedPizza in the Class 
  Hierarchy view. Note the icon in the upper right corner of this view that looks similar to this: O+. When 
  you hover over this icon it should say Create. You can use this icon to create new classes and subclasses. 
  Make sure NamedPizza is still selected and click on this icon to create a new subclass of NamedPizza. 
  This will bring up a dialog titled Create Classes. In the Class names field enter the name ChicagoPizza. 
  You can leave the Language Tag field empty. Click on the Create button. You should now see 
  ChicagoPizza as a new subclass of NamedPizza. Note that at the top of the Project Feed there should 
  be a new entry for your action of creating this new class. 