In the bottom right corner of the outline editor, you may notice a symbol that looks like this:
This is the accessibility checker. It is there to watch for accessibility features like alt text, captions, and headers for tables. If you see a number next to the little figure, you can click on it to see a breakdown of where the accessibility issues are within your outline. For example:
This message will come up if you add an image without alt text. You can enter your alt text within the box provided, or mark if the image is purely decorative.
This message will come up if your table still needs a header. You can click the checkbox to add a header automatically.
If the accessibility checker has no number next to it, it has not detected any issues with accessibility. Please note that this feature is still in its infancy and does not cover all of accessibility. Please consult web accessibility guidelines to ensure that your outlines are usable by all.