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4.2. Header Section
The Header section contains a hyperlink that, when activated, opens the CND Notation Preference page. Also, if the CND being edited has validation errors, the header section will have another hyperlink that identifies the total number of validation errors found. Clicking the errors hyperlink will open a dialog that lists the specific validation errors and provides a way to export those validation messages to a file.

Where did the comment section go?
Red Hat's documentation publication system recently went through an upgrade to enable speedier, more mobile-friendly content. We decided to re-evaluate our commenting platform to ensure that it meets your expectations and serves as an optimal feedback mechanism. During this redesign, we invite your input on providing feedback on Red Hat documentation via the discussion platform.