Reference Style is used to turn on/off the R1C1 reference style. By default, this option is disabled and the A1 reference style is used.
When the A1 reference style is used, columns are designated by letters, and rows are designated by numbers. If you select the cell located in row 3 and column 2, its address displayed in the box to the left of the the formula bar looks like this: B3. If the R1C1 reference style is enabled, both rows and columns are designated by numbers. If you select the cell at the intersection of row 3 and column 2, its address will look like this: R3C2. Letter R indicates the row number and letter C indicates the column number.

In case you refer to other cells using the R1C1 reference style, the reference to a target cell is formed based on the distance from an active cell. For example, when you select the cell in row 5 and column 1 and refer to the cell in row 3 and column 2, the reference is R[-2]C[1]. The numbers in square brackets designate the position of the cell relative to the current cell position, i.e. the target cell is 2 rows up and 1 column to the right of the active cell. If you select the cell in row 1 and column 2 and refer to the same cell in row 3 and column 2, the reference is R[2]C, i.e. the target cell is 2 rows down from the active cell and in the same column.

Formula Language is used to select the language for displaying and entering formula names, argument names and descriptions.
Formula language is supported for 32 languages:
Belarussian, Bulgarian, Catalan, Chinese, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Indonesian, Italian, Japanese, Korean, Lao, Latvian, Norwegian, Polish, Portuguese (Brazil), Portuguese (Portugal), Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Turkish, Ukrainian, Vietnamese.