I downloaded Noobyourmom's Rpg tutorial but i'm having trouble understanding some of it.

(if (= (player_action_test_primary_trigger) 0) (camera_set camera_marker 0))
(if (= (player_action_test_primary_trigger) 0) (show_hud_help_text true))
(if (= (player_action_test_primary_trigger) 0) (hud_set_help_text obj_x))
(if (= (player_action_test_primary_trigger) 0) (player_action_test_reset))
(if (= (player_action_test_primary_trigger) 0) (sleep_until (= (or
(player_action_test_jump) (player_action_test_primary_trigger)) true) 15))

Does all of this happen when the player presses the primary trigger? Or does each line require the player to press the trigger?