Add an item to the list
item
(*): an item to add to the list
Add multiple items to the list
items
(*[]): an array of items to be added to the list
Remove all items from the list
[items]
(array): an array of items to add to the list
Remove an item from the list
item
(*): the item to remove from the list
(boolean): true if the item was successfully removed, false if not
(number): The number of items in the list