> Tastefully displays the most relevant citation at the bottom of the screen as ...

> Tastefully displays the most relevant citation at the bottom of the screen as you read, e.g. see https://redsails.org/really-existing-fascism/

This is very nice; I think the same can be achieved with general footnotes (not just source links), though you'd have to be careful to keep them short lest you take up a lot of screen space.