Which of the cell pointer indicate that you can fill series?

In spreadsheet applications like Microsoft Excel or google Sheets, the cell pointer that indicates you can fill a series is the small square in the bottom-right corner of the selected cell, known as the "fill handle." When you hover over this square, the cursor changes to a plus sign (+), signaling that you can click and drag to fill a series of values or formulas in adjacent cells. This feature allows you to easily create sequences or replicate data efficiently.