Maybe "off" should be documented at https://forge.fi-ware.org/plugins/mediawiki/wiki/fiware/index.php/Publish/Subscribe_Broker_-_Orion_Context_Broker_-_User_and_Programmers_Guide#Multi-tenancy to avoid the situation of a user getting "Bad value for -multitenant. Allowed values: 'off', 'header' and 'url'" and asking himself "What is this off about? I've readed the manual and nothing is told about it".