# File lib/rake/application.rb, line 87
87:     def top_level
88:       standard_exception_handling do
89:         if options.show_tasks
90:           display_tasks_and_comments
91:         elsif options.show_prereqs
92:           display_prerequisites
93:         else
94:           top_level_tasks.each { |task_name| invoke_task(task_name) }
95:         end
96:       end
97:     end