Cell values, Formulas, Formula computation engine, Multiple worksheets
                Format cells, Auto-formats, Row & column dimension, Conditional formatting
                Hyperlinks, Comments, Images
                Names, Data validation
                Header & footer, Page setup options, Page breaks
                Group and outline levels, Split and freeze panes, Filter and AutoFilter
                Charts, Pivot tables, Pivot charts
                VB and macros, Encryption and password protection