Overview
 Procedure Init     (Resv:Word);
 Procedure Get      (Var Item:ListData);
 Procedure Put      (Item:ListData);
 Procedure Insert   (Item:ListData);
 Procedure Delete;
 Procedure ShiftUp;
 Procedure GotoNext;
 Procedure GotoPrev;
 Procedure GotoBegin;
 Procedure GotoLast;
 Procedure GotoEnd;
 Procedure GotoItem (Here:Word);
 Procedure Hop      (By  :LongInt);
 Procedure SwapWith (This:Word);
 Procedure ShellSort;
 Function  CurPoint :Word;
 Function  CurSize  :Word;
 Function  AtBegin  :Boolean;
 Function  AtLast   :Boolean;
 Function  AtEnd    :Boolean;
 Function  Empty    :Boolean;
 Function  Full     :Boolean;
 Procedure Done;