Procedure Init;

    This  initializes  the  object.   This  must  be  called  before  any
    other method is called.  It  may  not  be  called  thereafter (unless
    an error occurs) as this  will  leave  linked  lists  floating around
    in memory and  possibly  open  files  not  closed.   Should  an error
    occur, simply destroy the  directory  linked  list and then call Init
    to  reinitialize  the  database  object  so  a  new  database  can be
    opened.