5.1.3 Add item

We are only adding items to the beginning of a list. The operation will involve the following steps:

• create a new empty list
• set the new item as the first value of the new list
• change the rest of the new list to the current list
• alias the current list to be the new list
• alias the new list to be the empty list
• delete the new list

The actual code is not supplied because it makes a good homework assignment.