perhaps adding a tool-tip or alternate text would cause something to be read by screen readers for navigating the various tabs.?
+ A ToolTip is text that appears in an explanatory popup when you allow the mouse cursor to hover over a button, checkbox, slider, textbox, or selector.
+ Microsoft's Tab control does not provide the ability to specify a ToolTip.
+ Every command button, radio button, checkbox, slider, textbox, and selector in every DXLab application has specified a ToolTip since their first public version ~20 years ago.