Specifies the specific segment of the list cursor to fetch. These
    options are available only if you specified the SCROLL option in
    the DECLARE CURSOR statement. The choices are:

    o  NEXT

       Fetches the next segment of the list cursor. This is the
       default.

    o  PRIOR

       Fetches the segment immediately before the current segment of
       the list cursor.

    o  FIRST

       Fetches the first segment of the list cursor.

    o  LAST

       Fetches the last segment of the list cursor.

    o  RELATIVE simple-value-expression

       Fetches the segment of the list cursor indicated by the value
       expression. For example, relative -4 would fetch the segment
       that is four segments prior to the current segment.

    o  ABSOLUTE simple-value-expression

       Fetches the segment of the list cursor indicated by the value
       expression. For example, absolute 4 would fetch the fourth
       segment of the list cursor.