The cursor operation is as follows: Push the CURSOR button once to activate the two vertical cursors. Push again to turn on the two vertical and two horizontal cursors. Push again to turn off all cursors. When the cursors are on, you can turn the multipurpose knobs to control their position. SELECT button: Push to activate special functions. For example, when using the two vertical cursors (and no horizontal ones are visible), you can push this button to link or unlink the cursors. When the two vertical and two horizontal cursors are both visible, you can push this button to make either the vertical cursors or the horizontal ones active.