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Liblouis is an open-source braille translator and back-translator. It features support for computer and literary braille, supports contracted and uncontracted translation for many, many languages (Arabic, Armenian, Bulgarian, Chinese, Croatian, Czech, Danish, Dutch, English, Esperanto, Estonian, Finish, French, Gaelic, German, Greek, Icelandic, Italian, Lithuanian, Norwegian, Polish, Portuguese, Romanian, Russian, Slovakian, Spanish, Swedish, Turkish, Vietnamese, Welsh) and has support for hyphenation. New languages can easily be added through tables that support a rule- or dictionary based approach. Included are also tools for testing and debugging tables. Liblouis also supports math braille (Nemeth and Marburg). The formatting of braille is provided by the companion project liblouisxml.

Liblouis has features to support screen-reading programs. This has led to its use in two Open Source screenreaders, NVDA and Orca. It is also used in some commercial assistive technology applications such as from ViewPlus for example.

Liblouis is based on the translation routines in the BRLTTY screenreader for Linux. It has, however, gone far beyond these routines. It is named in honor of Louis Braille. In Linux and Mac OSX it is a shared library, and in Windows it is a DLL.

News

Noteworthy changes in release 1.6.2 (2009-05-1)

This release contains a new opcode for Malaysian Braille. See the documentation for a description of the new opcode.

New features

Noteworthy changes in release 1.6.1 (2009-04-21)

This is mostly a bug fix release. It contains many bug fixes that were discovered in the course of developing UK Math tables.

Bug fixes

Noteworthy changes in release 1.6 (2009-03-04)

This release features support for Danish and Russian and updated tables for French and Norwegian. The search path for tables can now be specified using an environment variable. Finally there is the usual assortment of bug fixes.

New features

Bug fixes

Noteworthy changes in release 1.5.2 (2009-01-26)

This is a big release for liblouis. It's the first time that it is done from the Google code page. A number of people have contributed, namely John Boyer (table debugger, bug fixes), Eitan Isaacson (Python bindings), James Teh (Python bindings, bug fixes), Christian Egli (documentation) and Michel Such (table for French grade 2).

New features

Bug fixes









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