Mar 8, 2021 Highlights form elements ( input , textarea , and select ) without Reports a missing lang (or xml:lang ) attribute for the html tag (WCAG 2.0: 

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lang attribute for textarea (HTML4 & HTML5) Language code for the content of the element. Values (Default Value: no default value)

If you don't set the tabindex property, this link will be included as a stop in the tab order.