Changes

A typical use of Unicode blocks is in the definition of '''fallback''' fonts to provide glyphs for certain characters. Sometimes, when writing a document in ConTeXt, one needs to typeset special symbols that are not available in the base font of the document. In such a situation, one can specify a fallback font to provide these missing symbols. Another use of fallback fonts arises when one wants to replace For example, in the glyphs for some characters in following document, the base font with [[TeX Gyre|TeX Gyre Pagella]] does not have the glyphs for those Cyrillic characters from another font, whose code points are in the Unicode block {{code|Cyrillic}}. In such a case, The document uses the {{cmd|definefallbackfamily}} to get the missing glyphs from the latter font can be specified as a fallback {{code|DejaVu Serif}} font.