Excel's Fill Handle feature is an incredibly useful tool that can save you time when you're entering repetitive data. The Fill Handle allows you to automatically copy and fill values in a range of cells, making data entry much easier and faster.

The Fill Handle is located in the lower-right corner of the selected cell and looks like a small black cross. When you click and drag the Fill Handle, the cell's content is automatically copied and filled into the adjacent cells.

You can also use the Fill Handle to apply formulas to a range of cells. For example, if you want to add 1 to a range of cells, select the first cell and type in the formula =A1+1. Drag the Fill Handle over the cells you want to apply the formula to and it will automatically apply the same formula to each cell.

You can also use the Fill Handle to fill dates and times, as well as to create custom lists such as numbers, letters, or even items from another sheet. You can also use it to copy cell formatting, such as color, font size, or borders.

In conclusion, Excel's Fill Handle is a great time-saving feature that can make data entry much easier and faster. By understanding how to use the Fill Handle, you'll be able to quickly enter repetitive data and apply formulas to multiple cells with just a few clicks.