comments
diff --git a/org.eclipse.nebula.widgets.nattable.renderer.swt/src/org/eclipse/nebula/widgets/nattable/renderer/swt/layer/viewport/ScrollBarHandler.xtend b/org.eclipse.nebula.widgets.nattable.renderer.swt/src/org/eclipse/nebula/widgets/nattable/renderer/swt/layer/viewport/ScrollBarHandler.xtend
index 54b21dd..71d70f1 100644
--- a/org.eclipse.nebula.widgets.nattable.renderer.swt/src/org/eclipse/nebula/widgets/nattable/renderer/swt/layer/viewport/ScrollBarHandler.xtend
+++ b/org.eclipse.nebula.widgets.nattable.renderer.swt/src/org/eclipse/nebula/widgets/nattable/renderer/swt/layer/viewport/ScrollBarHandler.xtend
@@ -40,12 +40,15 @@
 	def getMinIncrement() { minIncrement }
 	def getMinPageIncrement() { minPageIncrement }
 
+	/**
+	 * SWT event handler
+	 */
 	override handleEvent(Event event) {
 		updateViewportOrigin
 	}
 	
 	/**
-	 * Update the viewport origin from the scrollbar selection.
+	 * Update the viewportAxis' origin from the scrollbar selection.
 	 */
 	def void updateViewportOrigin() {
 		val visiblePixelSize = viewportAxis.visiblePixelSize