- o -

• OFF : Elgg\Logger
• OPTION_BEGIN_CALLBACK : Elgg\EventsService
• OPTION_CONTINUE_ON_EXCEPTION : Elgg\EventsService
• OPTION_END_CALLBACK : Elgg\EventsService
• OPTION_STOPPABLE : Elgg\EventsService
• OPTION_TIMER_KEYS : Elgg\EventsService
• OPTION_USE_TIMER : Elgg\EventsService
• OUTPUT_KEY : Elgg\ViewsService