Type: script code
This should be set to code which is called when the user presses the Back button. Return true to allow the previous page to be displayed and false to disallow moving back a page. Use the canRewind property to indicate to the user (by disabling the Back button) that they cannot go back a page.

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 Contributors to this page: Sheppy, Marsf, Dria
 Last updated by: Sheppy,