For development, this demo requires a browser with support for ES6 modules. Try current Firefox, e.g., with NVDA or JAWS.
Try this: focus an equation (click on it or tab to it), then use the arrow keys. If you're using a screenreader, use browse mode until you hear an equation, then switch out of virtual/browse mode to explore with arrow keys. Depending on the screenreader you may have to move the focus to the equation.
The solution to the quadratic equation
is really overused as an example.
The solution to the quadratic equation
is really overused as an example.
The same method works for other complex content as well.
Another example using a chemical diagram.