scrollLineUp(_:) Scrolls the content up by a line. Declarationoptional func scrollLineUp(_ sender: Any?) See AlsoScrolling ContentscrollPageDown(_:)scrollPageUp(_:)scrollLineDown(_:)scrollToBeginningOfDocument(_:)scrollToEndOfDocument(_:)pageDown(_:)pageUp(_:)pageDownAndModifySelection(_:)pageUpAndModifySelection(_:)centerSelectionInVisibleArea(_:)