983daeae_eless_LAN_Controllers____Cisco_Table_1_Command_Mode_Summary_Exit_Method
[Mode] Global configuration [Access Method] While in privileged EXEC mode, enter the configure command. [Prompt] Controller(config)# [About This Mode] Use this mode to configure parameters that apply to the entire controller. Use this mode to configure access point commands that are part of the running config of the controller. [Exit Method] 
To exit to privileged EXEC mode, enter exit or end, or press Ctrl-Z.
Security Command Reference, Cisco IOS XE Release 3SE (Cisco WLC 5700 Series) - Using the Command-Line Interface [Cisco 5700 Series Wireless LAN Controllers] - Cisco