Introduction

Most Latin-based European languages were supported in L^ATEX by introducing the T1 font encoding and by using the fontenc and inputenc packages; these use only standard TEX means to support any 8-bit input encoding and this one standard font encoding. The restriction to a single font encoding guarantees that multiple languages can happily coexist in one document (e.g., hyphenation will be correct for all languages).

Starting with the December 1998 Release, L^ATEX finally supports Cyrillic languages. This support is based on the new standard Cyrillic TEX font encodings--T2A, T2B, T2C, and X2. The first three of these satisfy some basic requirements for L^ATEX T* encodings, and thus can be used in multi-lingual documents with other languages based on standard font encodings.

The reason why we need four different Cyrillic font encodings is that these font encodings support all the Cyrillic languages that have been used during the twentieth century (see Section 4)! The number of Cyrillic glyphs is large, so they cannot be represented with 128 character slots; the other (lower) 128 slots are reserved for Latin letters and other invariant symbols that are needed for the encoding to be a conformant L^ATEX T encoding.

There are some glyphs in the T2* encodings which do not yet have associated characters in Unicode, the world-wide character standard. Also, one more font encoding, T2D, is planned for a forthcoming release of L^ATEX. A lot of Cyrillic input encodings are already supported (see Section 5), and additional encodings could be added easily.