# SheetJS File Format Notes Various spreadsheet file format notes. - [Data Interchange Format (DIF)](/dif/README.md) - [Lotus WK# formats](/lotus/README.md) - [Symbolic Link (SLK/SYLK)](/sylk/README.md) - [XLSB Short Records](/xlsb_short_records/README.md) - [Number Formats](/ssf/README.md) - [SpreadsheetML2003](/xlml/README.md) - [LibreOffice Bugs](/lobugs/README.md) - [Numbers 3+ (iWork 2013+)](/iwa/README.md) - [Formula Localization](/fmla/README.md) Project sponsored by [SheetJS](https://sheetjs.com) [![Analytics](https://ga-beacon.appspot.com/UA-36810333-1/SheetJS/notes?pixel)](https://github.com/SheetJS/notes)