 the use of a non-visible status message, such as "system available", ensures equivalent status information is provided. See Sufficient Techniques for more discussion.</p>
		<h4>Non-textual status content</h4>
		<p>Changes in content are not restricted to text changes. Where an icon or sound indicates a status message, this information will be surfaced by the screen reader through a combination of two things: 1) existing WCAG requirements governing text alternatives (under SC 1.1.1 Non-Text Content), and 2)