<s>
LuaTeX	B-Language
is	O
a	O
TeX-based	O
computer	O
typesetting	O
system	O
which	O
started	O
as	O
a	O
version	O
of	O
pdfTeX	B-Language
with	O
a	O
Lua	B-Language
scripting	I-Language
engine	O
embedded	O
.	O
</s>
<s>
After	O
some	O
experiments	O
it	O
was	O
adopted	O
by	O
the	O
TeX	B-General_Concept
Live	I-General_Concept
distribution	O
as	O
a	O
successor	O
to	O
pdfTeX	B-Language
(	O
itself	O
an	O
extension	O
of	O
ε-TeX	B-General_Concept
,	O
which	O
generates	O
PDFs	B-Application
)	O
.	O
</s>
<s>
The	O
project	O
was	O
originally	O
sponsored	O
by	O
the	O
Oriental	O
TeX	B-Application
project	O
,	O
founded	O
by	O
Idris	O
Samawi	O
Hamid	O
,	O
Hans	O
Hagen	O
,	O
and	O
Taco	O
Hoekwater	O
.	O
</s>
<s>
The	O
main	O
objective	O
of	O
the	O
project	O
is	O
to	O
provide	O
a	O
version	O
of	O
TeX	B-Application
where	O
all	O
internals	O
are	O
accessible	O
from	O
Lua	B-Language
.	O
</s>
<s>
In	O
the	O
process	O
of	O
opening	O
up	O
TeX	B-Application
much	O
of	O
the	O
internal	O
code	O
is	O
rewritten	O
.	O
</s>
<s>
Instead	O
of	O
hard	O
coding	O
new	O
features	O
in	O
TeX	B-Application
itself	O
,	O
users	O
(	O
or	O
macro	O
package	O
writers	O
)	O
can	O
write	O
their	O
own	O
extensions	O
.	O
</s>
<s>
LuaTeX	B-Language
offers	O
support	O
for	O
OpenType	O
fonts	O
with	O
external	O
modules	O
.	O
</s>
<s>
One	O
of	O
them	O
,	O
written	O
in	O
Lua	B-Language
,	O
is	O
provided	O
by	O
the	O
LuaTeX	B-Language
team	O
,	O
but	O
support	O
for	O
complex	O
scripts	O
is	O
limited	O
;	O
there	O
is	O
work	O
in	O
progress	O
to	O
allow	O
HarfBuzz	B-Language
as	O
an	O
alternative	O
rendering	O
engine	O
.	O
</s>
<s>
A	O
related	O
project	O
is	O
MPLib	O
(	O
an	O
extended	O
MetaPost	B-Language
library	O
module	O
)	O
,	O
which	O
brings	O
a	O
graphics	O
engine	O
into	O
TeX	B-Application
.	O
</s>
<s>
The	O
LuaTeX	B-Language
team	O
consists	O
of	O
Luigi	O
Scarso	O
,	O
Taco	O
Hoekwater	O
,	O
Hartmut	O
Henkel	O
and	O
Hans	O
Hagen	O
.	O
</s>
<s>
Version	O
1.12	O
was	O
released	O
for	O
TeXLive	B-General_Concept
2020	O
.	O
</s>
<s>
,	O
both	O
ConTeXt	O
mark	O
IV	O
and	O
LaTeX	B-Application
with	O
extra	O
packages	O
(	O
e.g.	O
</s>
<s>
luaotfload	O
,	O
luamplib	O
,	O
luatexbase	O
,	O
luatextra	O
)	O
make	O
use	O
of	O
new	O
LuaTeX	B-Language
features	O
.	O
</s>
<s>
(	O
When	O
LuaTeX	B-Language
is	O
used	O
with	O
the	O
LaTeX	B-Application
format	O
,	O
it	O
is	O
sometimes	O
called	O
"	O
LuaLaTeX	O
"	O
.	O
)	O
</s>
<s>
Both	O
are	O
supported	O
in	O
TeX	B-General_Concept
Live	I-General_Concept
2010	O
with	O
LuaTeX	B-Language
0.60	O
,	O
and	O
in	O
LyX	B-Language
.	O
</s>
<s>
Special	O
support	O
in	O
plain	B-Application
TeX	I-Application
is	O
still	O
under	O
development	O
.	O
</s>
