AXWebArea AXRoleDescription='HTML content'
++AXTabGroup AXRoleDescription='tab group'
++++AXRadioButton AXSubrole=AXTabButton AXRoleDescription='tab' AXTitle='Tab 1' AXValue=0
++++AXRadioButton AXSubrole=AXTabButton AXRoleDescription='tab' AXTitle='Tab 2' AXValue=0