Discover how using Alt + Down Arrow will sSpeed up data entry. br br At the same time we will answer what is the use of Alt +down arrow. br br In Excel, if you have not yet applied a filter to your table, pressing Alt + Down Arrow will display the AutoComplete drop-down list for the active cell. br br The AutoComplete drop-down list shows a list of values that you have previously entered into the same column as the active cell. You can use this list to quickly enter a value that you have entered before, without having to type the entire value again.