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<title>UK TeX FAQ -- question label luatex</title>
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<h3>PDFTeX becomes LuaTeX</h3>
<p/>As is said elsewhere in these FAQs, development of
<a href="FAQ-whatpdftex.html">PDFTeX</a> is &ldquo;in essence&rdquo; complete &mdash;
development of new facilities continues, but the limitations of the
present structure impose a strong limit on what facilities are
possible.
<p/>In this context, the idea of LuaTeX arose.
<a href="http://www.lua.org/"><i>Lua</a></i> is a script
language, designed to offer an interpreter with a very small
&ldquo;footprint&rdquo;, so it is rather easy to build it into other
applications.  So LuaTeX was launched as a PDFTeX
executable with a <i>Lua</i> interpreter built into it.
<p/>A <a href="http://www.luatex.org/">LuaTeX project</a> is now proceeding
(with monetary support from various sources) and is pursuing avenues
that many of the other
current projects have in their sights, notably Unicode character
representations and support for OpenType fonts.  Work is also in hand
to integrate the extensions pioneered by <a href="FAQ-omegaleph.html">Aleph</a>.
<p/><p>This question on the Web: <a href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=luatex">http://www.tex.ac.uk/cgi-bin/texfaq2html?label=luatex</a>
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