anchor.diff:      initializeFileTreeButtons();
       initializeWorkflowButtons();
       initializeWorkspaceButtons();
  +    initializeRequestForComments()
     };
   
     var initializeFileTree = function() {
  
positive.code:                     }
                  }
              }
              setAnnotations(editors[i], $(editors[i].container).data('id'));
          }
          // toggle button states (it might be the case that the request for comments button has to be enabled
          toggleButtonStates();
  
negative.code:           exercise_id: $('#editor').data('exercise-id'),
            files_attributes: (filter || _.identity)(collectFiles())
          },
          annotations_arr: []
        },
        dataType: 'json',
        method: 'POST',
  