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