tex--xet – Bidirectional extension of TeX

This is a bundle of extensions to TeX to provide bidirectional typesetting; it is expressed as a web change file.

Note that the TeX--XeT code has been incorporated into e-TeX extensions, so that engines incorporating the code directly are rarely found nowadays. Indeed, Knuth himself no longer distributes TeX--XeT, so it is to be considered obsolete.