# File lib/rake/application.rb, line 83
83:     def top_level
84:       standard_exception_handling do
85:         if options.show_tasks
86:           display_tasks_and_comments
87:         elsif options.show_prereqs
88:           display_prerequisites
89:         else
90:           top_level_tasks.each { |task_name| invoke_task(task_name) }
91:         end
92:       end
93:     end