enumGroupBy

typedef enum
{
    [helpstring("Group by, show all")]           groupby_showall         = 0,
    [helpstring("Group by, show duplicates")]    groupby_showduplicates  = 1,
    [helpstring("Group by, show single")]        groupby_showsingle      = 2,
    [helpstring("Group by, show merged cells")]  groupby_showmergedcells = 3
} enumGroupBy;

used in IXlsTableColumn::GroupBy method.