WebPage.AllowTabOrderWrap
From Xojo Documentation
Read-Only Property (As Boolean )
When True If True, tabbing between focusable controls will wrap between the last control in the tab order and the first. The default is True.
Notes
This is a design-time only property. It should be set to False for webpages that will be used by users who depend on accessibility settings that allow them to tab to the browser's toolbar controls.