- CAR - returns the first element of the list.
- CDR - returns everything but the first element of the list.
- CADR - returns the second element of the list.
- CADDR - returns the third element of the list.
- NTH - returns the nth element of the list.
- APPEND - returns any lists passed to it concatenated together as a
single list.
- LAST - returns the last element.
- LENGTH - returns the number of elements in the list.
- MEMBER - if the first argument is found to be an element of the list,
that element plus the rest of the list is returned.
- REVERSE - returns a copy of a list with the elements in reverse order.
- SUBST - returns a list with every instance of the second argument in
the list replaced by the first argument.