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Delayed refresh under 20 hours must not be used

Ensure <meta http-equiv="refresh"> is not used for delayed refresh

Main landmark should not be contained in another landmark

Ensure the main landmark is at top level

Document should not have more than one main landmark

Ensure the document has at most one main landmark

Landmarks should have a unique role or role/label/title (i.e. accessible name) combination

Ensure landmarks are unique

Headings should not be empty

Ensure headings have discernible text