Shuttle Control Button.
This button allows you to control the shuttle or jog speed of your VTR. When you move the mouse cursor over this button, the cursor changes to a pointing finger. If you press and hold the left mouse button then move the mouse either left or right you will make the VTR shuttle. Moving the mouse to the right is forward shuttle, moving the mouse to the left is reverse shuttle. When you release your finger from the mouse button the shuttle or jog stops and the VTR goes into still mode. To lock the shuttle control so that this won't happen, click on the shuttle control button with the right mouse button. This will also turn the button red so that you know it's locked on.