Hi everyone! <br/><br/>Could you please explain the difference between "along" and across" in the following context? I'd like to explain the difference to my students:<br/><br/>"Data is transferred <i>along</i> the data bus."<br/>"Heads move <i>across</i> the disk."<br/><br/>"The signal moves <i>across</i> the VDU screen from one side to the other."<br/>"The CPU can fetch data from memory <i>along</i> the data bus"<br/><br/>Thanks a lot!<br/><br/><br/>Mara.