# File lib/rake.rb, line 1991
1991:     def top_level
1992:       standard_exception_handling do
1993:         if options.show_tasks
1994:           display_tasks_and_comments
1995:         elsif options.show_prereqs
1996:           display_prerequisites
1997:         else
1998:           top_level_tasks.each { |task_name| invoke_task(task_name) }
1999:         end
2000:       end
2001:     end