-object length of the scrollbar. If you are implementing a scrolling canvas, for example, you
-would adjust the scroll range when the canvas is resized, by subtracting the canvas view size from the
-total virtual canvas size. When the two sizes are the same (all the canvas is visible), the range goes to zero
+object length of the scrollbar. If you are implementing a scrolling window, for example, you
+would adjust the scroll range when the window is resized, by subtracting the window view size from the
+total virtual window size. When the two sizes are the same (all the window is visible), the range goes to zero