title: How to put fine grid in plot
body: <p>I have a function like this: </p>
  
  <pre><code>plot(f,Body, 'r', f,Walk, 'b', 'LineWidth' , 3);
  </code></pre>
  
  <p>I want to put fine grid in the plot. How do I do this. </p>
  
  <p>Tried this </p>
  
  <pre><code>plot(f,Body, 'r', f,Walk, 'b', 'LineWidth' , 3);
  
   GridVisible = TRUE,
   SubgridVisible = TRUE;
  </code></pre>
  
  <p>but failed.  </p>