XeTeX is designed to provide a tool particularly suited to formatting long, structured documents, and supporting multilingual typesetting and complex non-Roman scripts. It merges the venerable TeX processor developed by Donald E. Knuth with the Unicode rendering capabilities of ATSUI and AAT fonts on Mac OS X. This means that it can be used to typeset complex scripts just as readily as English, by simply specifying an appropriate AAT font from among those installed in OS X; no complex font installation or configuration is needed. What's New: Version 0.86 fixes a serious bug that caused occasional crashes during hyphenation, in rare and apparently-random circumstances. All users are advised to update to this release. It also includes fixes for a number of problems that have been reported with PDF generation and LaTeX font substitution, and enhancements to the OpenType Layout support, particularly for Arabic script. | 
