<s>
In	O
digital	O
typography	O
,	O
the	O
New	B-General_Concept
Typesetting	I-General_Concept
System	I-General_Concept
(	O
NTS	O
)	O
is	O
a	O
discontinued	O
reimplementation	O
of	O
the	O
typesetting	O
system	O
TeX	B-Application
in	O
Java	B-Language
.	O
</s>
<s>
The	O
specific	O
aims	O
of	O
the	O
project	O
were	O
to	O
continue	O
the	O
tradition	O
of	O
Donald	O
Knuth	O
's	O
TeX	B-Application
by	O
providing	O
a	O
first-class	O
typesetting	O
software	O
which	O
is	O
both	O
portable	O
and	O
available	O
free	O
of	O
charge	O
.	O
</s>
<s>
But	O
whereas	O
TeX	B-Application
is	O
now	O
frozen	O
due	O
to	O
maximum	O
stability	O
,	O
NTS	O
was	O
intended	O
to	O
remain	O
flexible	O
and	O
extensible	O
.	O
</s>
<s>
NTS	O
is	O
written	O
in	O
Java	B-Language
.	O
</s>
<s>
It	O
is	O
alpha	O
software	O
(	O
released	O
in	O
2000	O
)	O
and	O
it	O
is	O
capable	O
of	O
generating	O
DVI	B-Application
.	O
</s>
<s>
(	O
Deutschsprachige	O
Anwendervereinigung	O
TeX	B-Application
)	O
in	O
1992	O
.	O
</s>
<s>
The	O
objective	O
of	O
the	O
project	O
was	O
to	O
re-implement	O
TeX	B-Application
in	O
a	O
100%	O
-compatible	O
way	O
.	O
</s>
<s>
Furthermore	O
,	O
the	O
by-then	O
standard	O
extensions	O
such	O
as	O
e-TeX	O
were	O
not	O
included	O
in	O
the	O
code	O
.	O
</s>
<s>
Also	O
,	O
in	O
order	O
to	O
be	O
useful	O
today	O
,	O
PDF	B-Application
output	O
as	O
well	O
as	O
pdfTeX-specific	O
extensions	O
need	O
to	O
be	O
implemented	O
.	O
</s>
<s>
Finally	O
,	O
by	O
being	O
100%	O
-compatible	O
with	O
TeX	B-Application
,	O
the	O
sub-processes	O
of	O
NTS	O
are	O
rather	O
interwoven	O
(	O
due	O
to	O
the	O
nature	O
of	O
traditional	O
TeX	B-Application
)	O
,	O
which	O
thereby	O
makes	O
the	O
task	O
of	O
adding	O
extensions	O
less	O
simple	O
than	O
had	O
been	O
envisaged	O
.	O
</s>
<s>
In	O
December	O
2002	O
,	O
a	O
group	O
of	O
people	O
started	O
a	O
reimplementation	O
of	O
TeX	B-Application
project	O
based	O
on	O
NTS	O
:	O
the	O
ExTeX	O
project	O
.	O
</s>
<s>
ExTeX	O
is	O
a	O
merger	O
of	O
NTS	O
with	O
eTeX	O
,	O
pdfTeX	B-Language
and	O
Omega	O
and	O
has	O
never	O
left	O
pre-alpha	O
state	O
.	O
</s>
<s>
Aleph	O
is	O
also	O
a	O
merge	O
of	O
eTeX	O
and	O
Omega	O
with	O
,	O
and	O
since	O
LuaTeX	B-Language
integrates	O
most	O
of	O
the	O
functionally	O
provided	O
by	O
Aleph	O
with	O
pdfTeX	B-Language
,	O
it	O
can	O
be	O
considered	O
a	O
realization	O
of	O
NTS	O
and	O
ExTeX	O
ideas	O
.	O
</s>
<s>
XeTeX	B-Application
provides	O
similar	O
functionality	O
,	O
but	O
in	O
a	O
different	O
way	O
.	O
</s>
