title: getSubmittedValue() vs. getValue()
body: <p>Is that correct:
  When I query a value before validation (or if validation failed) I have to use <code>getSubmittedValue();</code>. Once the value is validated, even if I query it in another validation later in the page/control I have to use <code>.getValue();</code> since <code>getSubmittedValue();</code> returns <em>null</em> after successful validation?</p>