Fallback Font
A fallback font is a reserve typeface containing symbols for as many Unicode characters as possible. When a display system encounters a character which is not part of the repertoire of any of the other available fonts, a symbol from a fallback font is used instead. Typically, a fallback font will contain symbols representative of the various types of Unicode characters.
Systems that do not offer a fallback font typically display black or white rectangles, question marks, or nothing at all in place of missing characters. Placing one or more fallback fonts at the end of a list of preferred fonts insures that there are no missing characters.
Read more about Fallback Font: The Unicode BMP Fallback Font, The Unicode Last Resort Font, The GNU Unifont, Apple's Last Resort Font
Famous quotes containing the word font:
“Le corps, l’amour, la mort, ces trois ne font qu’un.”
—Thomas Mann (1875–1955)