From one of CD's many (excellent) references:-
Each certificate holder shall include on passenger information cards, presented in the language in which briefings and oral commands are given by the crew, at each exit seat affected by this section, information that, in the event of an emergency in which a crewmember is not available to assist, a passenger occupying an exit seat may use if called upon to perform the following functions:
(1) Locate the emergency exit;
(2) Recognize the emergency exit opening mechanism;
(3) Comprehend the instructions for operating the emergency exit;
(4) Operate the emergency exit;
(5) Assess whether opening the emergency exit will increase the hazards to which passengers may be exposed;
(6) Follow oral directions and hand signals given by a crewmember;
(7) Stow or secure the emergency exit door so that it will not impede use of the exit;
(8) Assess the condition of an escape slide, activate the slide, and stabilize the slide after deployment to assist others in getting off the slide;
(9) Pass expeditiously through the emergency exit; and
(10) Assess, select, and follow a safe path away from the emergency exit.