Inserts an item at the specified position in the list
You can specify where to insert the item by choosing from the pull-down menu or
typing in a number. Choosing "random" inserts at a random place in the list. Choosing
"last" adds the item to the end of the list. The length of the list increases by 1.
You can indicate where in the list you want to add an item.
inserts item at the specified place in the list.
inserts item at a random place in the list.