title: Drupal: APi coding and fields in a fieldset
body: <p>I am coding my own Drupal module and working with the form api to create the fields that make up the form on a page. I have fields defined like: $form['username']. </p>
  
  <p>Now i would like to have a fieldset for the fields, which results in the following definition: $form["settings"]["username"]. </p>
  
  <p>Question: which other code does this affect? for example i have code like $form_state['values']['username'], does this need to be changed?</p>