# File lib/rake/application.rb, line 94
 94:     def top_level
 95:       run_with_threads do
 96:         if options.show_tasks
 97:           display_tasks_and_comments
 98:         elsif options.show_prereqs
 99:           display_prerequisites
100:         else
101:           top_level_tasks.each { |task_name| invoke_task(task_name) }
102:         end
103:       end
104:     end