I have a one page workbook with 6002 rows, 137 columns, considerable formating and a single chart that when saved is 11,985,920 bytes? The page was created by a macro. Duplicating the page increases the file size by 902,920 bytes. Removing the chart saves 4096 bytes and removing all formating and restoring column and row widths and heights to default values saves an additional 3072 bytes. What is the origin of the initial approximately 11,950,000 bytes?