AutoFill gives an Excel like option to a DataTable to click and drag over multiple cells, filling in information over the selected cells and incrementing numbers as needed.

If you are looking to emulate the UI of spreadsheet programs such as Excel with DataTables, the combination of KeyTable and AutoFill will take you a long way there!

When an auto fill is completed by the end user, AutoFill will determine how many data fill plug-ins can be used for the data that has been dragged over. If there are multiple options it will display a list of those options to the end user allowing them to select the action to perform - a cancel button is also shown.
By default, if there is only a single data fill plug-in that can operate on the data, it will be immediately acted upon, no confirmation required by the end user and no option to cancel the action.

AutoFill provides the ability to determine what columns it should be enabled upon through the autoFill.columns option. This will accept any value allowed by the column-selector data type, such as an array of column indexes, class names, or as shown in this case a jQuery selector.

When dragging an AutoFill handle, the table (if DataTables scrolling is enabled) or the window will be automatically scrolled, as you approach the edge of the scrolling component. The example below shows the effect with DataTables scrolling (and also window if needed).