question: void startScrolling ( ) { if ( log . isLoggable ( PlatformLogger . Level . FINER ) ) { log . finer ( "Start scrolling on " + this ) ; } scroll ( ) ; if ( scroller == null ) { scroller = new XScrollRepeater ( this ) ; } else { scroller . setScrollbar ( this ) ; } scroller . start ( ) ; }
target:  Tell the scroller to start scrolling.