for                      Signals the Start of a FOR Loop

 for <index> := <start> to <finish> do
   <statement>;

 for <index> := <start> downto <finish> do
   <statement>;

    The FOR loop allows you to execute a statement some number of times.
    An index variable is set to an initial ordinal value, <start>. If
    <index>'s value is greater than the ending value, <finish>, then the
    FOR loop is completed, and execution continues at the first statement
    following the FOR loop; otherwise, <statement> is executed, <index> is
    set to the next possible value, and the test is made again. If <start>
    is greater than <finish>, then <statement> is never executed.

    The DOWNTO keyword is used when you want a FOR loop to go from a high
    value to a low value: <index> is decremented, and the loop ends when
    <index>'s value is less than <finish>. If <start> is less than
    <finish>, then <statement> is never executed.

         <index>    Any declared ordinal (Integer, Char, Boolean,
                    enumerated) variable.

<start>,<finish>    Any expression of the same type as <index>.

     <statement>    Any legal statement; for multiple statements, use a
                    compound statement.

  -------------------------------- Example ---------------------------------

           for I := 0 to 10 do begin
               J := I*I;
             Writeln(I:2,J:4)
           end;

           for I := 1 to 100 do begin
             Write('Enter next value:  ');
             Readln(List[I])
           end;

           for Power := -10 to 10 do
             Writeln('e^',Power,' = ',Exp(Power):10);

           for Flag := True downto False do
             if Flag
               then Writeln('It''s true, now')
               else Writeln('Now it''s not');