It is used as setting information about whether to change the case of text like ColumnAutoFilter.displayCase.
| NORMAL | "normal" | Do not change. |
| UPPER | "upper" | Change to uppercase. |
| LOWER | "lower" | Change to lowercase. |
var col = grid.columnByName('Addr');
col.setAutoFilter({
displayCase: DataLudi.TextCase.UPPER
});