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In section 2.8 ... We should explain the way that aria-labelledby reports to the accessible api and the way aria-describedby does, making the distinction between the accDescription and accName... particularly in form fields where there is extra instructions besides the label..... understanding that aria-labelledby will override the html label element for the accName spot in the API... and giving an example of aria describedby...how it provides extra information via the accDescription