+++++++++++++++++++++++++++++++++++++++++++
  +              MAD-X 3.03.50              +
  + Code Modification Date: 24.04.2007      +
  + Execution Time Stamp: 26.04.07 13.01.28 +
  +++++++++++++++++++++++++++++++++++++++++++
create,table=t,column=a,b;

Value of withname 1
a=1; b=2;

fill,table=t; ! as usual

a=2; b=4;

++++++ info: a redefined
++++++ info: b redefined
fill,table=t; ! as usual

write,table=t;

@ NAME             %01s "T"
@ TYPE             %04s "USER"
@ TITLE            %08s "no-title"
@ ORIGIN           %19s "MAD-X 3.03.50 Linux"
@ DATE             %08s "26/04/07"
@ TIME             %08s "13.01.37"
*                  A                  B 
$                %le                %le 
                  1                  2
                  2                  4
a=3;

++++++ info: a redefined
fill,table=t,row=1; ! now the first row is [3 4]

write,table=t;

@ NAME             %01s "T"
@ TYPE             %04s "USER"
@ TITLE            %08s "no-title"
@ ORIGIN           %19s "MAD-X 3.03.50 Linux"
@ DATE             %08s "26/04/07"
@ TIME             %08s "13.01.37"
*                  A                  B 
$                %le                %le 
                  3                  4
                  2                  4
b=-1;

++++++ info: b redefined
fill,table=t; ! now the last row is [3 -1]

write,table=t;

@ NAME             %01s "T"
@ TYPE             %04s "USER"
@ TITLE            %08s "no-title"
@ ORIGIN           %19s "MAD-X 3.03.50 Linux"
@ DATE             %08s "26/04/07"
@ TIME             %08s "13.01.37"
*                  A                  B 
$                %le                %le 
                  3                  4
                  2                  4
                  3                 -1
setvars,table=t,row=1; ! now a=3, b=4

value,a,b;

a =                  3 ;
b =                 -1 ;
setvars,table=t;       ! now a=3, b=-1

value,a,b;

a =                  3 ;
b =                 -1 ;

  Number of warnings: 0

  +++++++++++++++++++++++++++++++++++
  + MAD-X 3.03.50 finished normally +
  +++++++++++++++++++++++++++++++++++