Reversing type

[2] As such, reversing is a meaningfulful way to add emphasis and contrast to the page as well as to develop a visible typographic hierarchy.

[3] Reversing greatly affects a text's readability,[4] so it is most often used for printing headings and for highlighting small fragments of text, preferably with bold emphasis.

Many older people have a slight, comfortable astigmatism.

At the high resolution of modern computer screens, they better see black letters on white background rather than vice versa.

The reversing is widely used in the various equipment design (from television remotes to dump trucks): a half-erased button or plate remains readable.