lib/blacklight/hierarchy/engine.rb in blacklight-hierarchy-3.0.0 vs lib/blacklight/hierarchy/engine.rb in blacklight-hierarchy-4.0.0

@@ -2,8 +2,10 @@
 require 'rails'
 
 module Blacklight
   module Hierarchy
     class Engine < Rails::Engine
+      config.closed_icon = '⊞'
+      config.opened_icon = '⊟'
     end
   end
 end