Documentation:Column.autofocus

#TargetType.TaggedValue	CommaSeparatedExampleValues	Short Description
#Column.autofocus	True,False	Focuses the control when it appears on the screen. Might conflict with other focus events.

When #Column.autofocus appears on the screen, it moves the focus. For example, in an editable table where you create new rows, you would add autofocus to the field you want the user to be able to type into - and if you have a list of numbers you are entering and a button that adds a new row, if you add #Column.autofocus to that edit field, it will focus on that next new row.