Use the spacebar and `w`
<p>With the view to learn how to use the command <code>less</code>, there's an exercise which says "<em>Do the exercise again, but this time page through it. On Unix you use the spacebar and <code>w</code> (the letter w) to go down and up. Arrow keys also work</em>". Could anyone be able what it means by "<em>use the spacebar and <code>w</code></em>"</p>