History of Performance.mark() Revision history for: English (US) Aug 10, 2016, 1:57:26 PM jpmedley Previous Mar 1, 2016, 6:36:58 AM rolfedh Editorial review completed. Previous Dec 9, 2015, 6:07:36 PM AFBarstow Update Previous Dec 9, 2015, 6:05:16 PM AFBarstow Fix some bugs Dec 9, 2015, 6:02:33 PM AFBarstow New reference for Performance.mark() method (defined in User Timing standard)