The style of basic selection area being created by the user.
| BLOCK | "block" | The rectangular area containing one or more data cells. |
| ROWS | "rows" | The area containing all cells of one or more rows. |
| COLUMNS | "columns" | The area containing all cells of one or more columns. |
| SINGLE_ROW | "singleRow" | All data cells contained in one row. |
| SINGLE_COLUMN | "singleColumn" | All data cells contained in one column. |
| SINGLE | "single" | Select only one data cell. |
| NONE | "none" | Do not select. |