The difference you see is due to how the system rounds these numbers. The total size of all tables, at the top of the screen, is calculated and rounded to the nearest 1,000. For the subfile, which is made up of the individual tables, the size of each seperate table is rounded to the nearest 1,000 as well. Because of each program rounding individually, the total found by adding up the records in the subfile will almost always be less than the total found at the top of the screen.