Comment (including rationale for any proposed change):
From http://lists.w3.org/Archives/Public/public-comments-wcag20/2006May/0121
On a page with moving or scrolling content,
1. Check that a mechanism is provided in the Web unit or user agent to pause moving or scrolling content.
2. Use the pause mechanism to pause the moving or scrolling content.
3. Check that the moving or scrolling has stopped and does not restart by itself.
4. Check that a mechanism is provided in the Web unit or user agent to restart the paused content.
5. Use the restart mechanism provided to restart the moving content.
6. Check that the movement or scrolling has resumed from the point where it was stopped.
But the Understanding document uses an example of a stock ticker: A stock ticker has "pause" and "restart" buttons. Pausing the ticker causes it to pause on the current stock. Restarting causes the ticker to jump ahead to the current stock. Stocks that were updated during the pause will not be displayed. So which is it: Once you resume you have to start from where you paused, or can you skip what you missed?
Thank you for pointing out that this example does not meet SC 2.2.3. It has been modified.