Futurebasic/Language/Reference/scroll

Description
This statement scrolls the pixels in the rectangle, by a horizontal distance of   and a vertical distance of  , in the current output window. Positive values of  scroll to the right; positive values of  scroll downward; use negative values to scroll in the opposite direction(s). is often used in conjunction with scroll bars to view a graphic that is too large to fit entirely in the window.

generates a  event, which your program can detect in its dialog-event handling routine the next time a   statement is executed. Your dialog-event handling routine should respond to this event by redrawing the portion of the window that was left blank by the scroll. If you don't redraw this area explicitly, it will be filled with the window's current background color and pattern.

FB Lite behavior: When you use the "FB Lite" runtime,  operates only on the Graphics Window. Because "FB Lite" refreshes the window automatically, you won't receive a event.