What is the purpose of the AutoFill Options button?

The AutoFill Options button in spreadsheet applications, like Microsoft Excel or google Sheets, allows users to customize how data is filled in adjacent cells after using the AutoFill feature. It provides options to choose whether to copy the original data, fill a series, or apply formatting only. This feature enhances efficiency by offering quick adjustments based on the user's needs, thereby streamlining data entry and manipulation tasks.