181 Microsoft Excel Chart 4.0 Spreadsheet This is an outline record only, and requires further details, research or authentication to provide information that will enable users to further understand the format and to assess digital preservation risks associated with it if appropriate. If you are able to help by supplying any additional information concerning this entry, please return to the main PRONOM page and select ‘Add an Entry’. Text 1 Digital Preservation Department / The National Archives 02 Aug 2005 19 Jul 2013 x-fmt/126 PUID xlc File extension 876 BIFF 4 Chart BIFF4: BOF hex 0904. record length hex 0600, BIFF version=(not used), filetype=chart=2000 1 Absolute from BOF 0 0 09040600{2}2000 Is subtype of 680 Microsoft Excel 4.0 Worksheet (xls)