Instructions for screen reader support:

• Enable a screen reader while on the page, and tab navigate/use arrow keys as normal.
• It's recommended to enable text output (sometimes a developer feature) so that you can see what the screen reader will read out (which allows it to be muted, or even just helps to follow along).
• It's recommended to use a keyboard shortcut for quickly enabling/disabling the screen reader to avoid needing to navigate back through menus to disable it.

For the primary discussion around screen reader support, please read and comment on: discussion #673.