Task_element_arm
short long

e	Concurrent_elements
e	Decision_point
e	End_task
e	Exit_loop
e	Looping_element
e	Repeat_count
e	Repeat_until
e	Repeat_while
e	Start_task
e	Structured_task_element
e	Task_element
e	Task_element_assignment
e	Task_element_relationship
e	Task_element_sequence
d	Task_item
e	Task_step