This is the most basic function for building lists and other structures. Complex structures can be constructed from dotted pairs. Lists can be written in an abbreviated form, without the dots and most of the parentheses.
CAR returns the first member of the list.
This is done without altering the original list. It is synonymous with the function called REST . LAST accepts a single argument, which must evaluate to a list. A list containing just the last element of the list is returned. The values can be any S-expressions.