title: Add notes per each row/column in Table element
body: <p>I use <code>Table</code> element on the UI diagram.<br>
  I can add <code>notes</code> for the whole table.  </p>
  
  <p>How can I add description per a specific cell/row/column? </p>
  
  <p>I use a User Interfacediagram. The Table is element from the wireframing toolbox, its stereotype is "WireframeTable".<br>
   I would like to have the ability to add different description to each cell 
  Any ideas?</p>