title: HTML5 sub nav semantics
body: <p>A quick question re: HTML5 nav, specifically that of sub navigation (from a semantic point of view).</p>
  
  <p>I have <code>&lt;nav&gt;</code> in the header for the main menu. Down the left of a standard page I have second level nav and down the right third level nav (no, I didn’t design the site). Is there anything I can do HTML5/ARIA wise to differentiate between the 3 menus? Or are they all simple <code>&lt;nav&gt;</code> blocks?</p>
  
  <p>I dont even think I need <code>&lt;aside&gt;</code> in either left or right column as there isnt any additional info apart from these actual menus.</p>
  
  <p>Any thoughts/advice would be much appreciated.</p>