<s>
The	O
Text	B-Language
Encoding	I-Language
Initiative	I-Language
(	O
TEI	O
)	O
is	O
a	O
text-centric	O
community	O
of	O
practice	O
in	O
the	O
academic	O
field	O
of	O
digital	O
humanities	O
,	O
operating	O
continuously	O
since	O
the	O
1980s	O
.	O
</s>
<s>
The	O
community	O
currently	O
runs	O
a	O
mailing	O
list	O
,	O
meetings	O
and	O
conference	O
series	O
,	O
and	O
maintains	O
the	O
TEI	O
technical	O
standard	O
,	O
a	O
journal	O
,	O
a	O
wiki	B-Protocol
,	O
a	O
GitHub	B-Application
repository	O
and	O
a	O
toolchain	B-General_Concept
.	O
</s>
<s>
The	O
TEI	O
Guidelines	O
collectively	O
define	O
a	O
type	O
of	O
XML	B-Protocol
format	O
,	O
and	O
are	O
the	O
defining	O
output	O
of	O
the	O
community	O
of	O
practice	O
.	O
</s>
<s>
The	O
format	O
differs	O
from	O
other	O
well-known	O
open	O
formats	O
for	O
text	O
(	O
such	O
as	O
HTML	B-Language
and	O
OpenDocument	B-Application
)	O
in	O
that	O
it	O
is	O
primarily	O
semantic	O
rather	O
than	O
presentational	O
;	O
the	O
semantics	O
and	O
interpretation	O
of	O
every	O
tag	O
and	O
attribute	O
are	O
specified	O
.	O
</s>
<s>
Schemata	O
in	O
most	O
of	O
the	O
modern	O
formats	O
(	O
DTD	B-Language
,	O
RELAX	B-Language
NG	I-Language
and	O
W3C	O
Schema	O
)	O
are	O
generated	O
automatically	O
from	O
the	O
tag-by-tag	O
definitions	O
.	O
</s>
<s>
In	O
addition	O
to	O
documenting	O
and	O
describing	O
each	O
TEI	O
tag	O
,	O
an	O
ODD	O
specification	O
specifies	O
its	O
content	O
model	O
and	O
other	O
usage	O
constraints	O
,	O
which	O
may	O
be	O
expressed	O
using	O
schematron	B-Language
.	O
</s>
<s>
TEI	B-Language
Lite	I-Language
is	O
an	O
example	O
of	O
such	O
a	O
customization	O
.	O
</s>
<s>
It	O
defines	O
an	O
XML-based	O
file	O
format	O
for	O
exchanging	O
texts	O
.	O
</s>
<s>
As	O
an	O
XML-based	O
format	O
,	O
TEI	O
cannot	O
directly	O
deal	O
with	O
overlapping	O
markup	O
and	O
non-hierarchical	O
structures	O
.	O
</s>
<s>
There	O
is	O
also	O
a	O
samples	O
page	O
on	O
the	O
TEI	O
wiki	B-Protocol
,	O
which	O
gives	O
examples	O
of	O
real-world	O
projects	O
that	O
expose	O
their	O
underlying	O
TEI	O
.	O
</s>
<s>
One	O
Document	O
Does	O
it	O
all	O
(	O
"	O
ODD	O
"	O
)	O
is	O
a	O
literate	B-Application
programming	I-Application
language	O
for	O
XML	B-Language
schemas	I-Language
.	O
</s>
<s>
In	O
literate-programming	O
style	O
,	O
ODD	O
documents	O
combine	O
human-readable	O
documentation	O
and	O
machine-readable	O
models	O
using	O
the	O
Documentation	O
Elements	O
module	O
of	O
the	O
Text	B-Language
Encoding	I-Language
Initiative	I-Language
.	O
</s>
<s>
Tools	O
generate	O
localised	B-General_Concept
and	I-General_Concept
internationalised	I-General_Concept
HTML	B-Language
,	O
ePub	O
,	O
or	O
PDF	B-Application
human-readable	O
output	O
and	O
DTDs	O
,	O
W3C	O
XML	B-Language
Schema	I-Language
,	O
Relax	B-Language
NG	I-Language
Compact	O
Syntax	O
,	O
or	O
Relax	B-Language
NG	I-Language
XML	B-Protocol
Syntax	O
machine-readable	O
output	O
.	O
</s>
<s>
The	O
Roma	O
web	O
application	O
is	O
built	O
around	O
the	O
ODD	O
format	O
and	O
can	O
use	O
it	O
to	O
generate	O
schemas	O
in	O
DTD	B-Language
,	O
W3C	O
XML	B-Language
Schema	I-Language
,	O
Relax	B-Language
NG	I-Language
Compact	O
Syntax	O
,	O
or	O
Relax	B-Language
NG	I-Language
XML	B-Protocol
Syntax	O
formats	O
,	O
as	O
used	O
by	O
many	O
XML	B-Protocol
validation	O
tools	O
and	O
services	O
.	O
</s>
<s>
ODD	O
is	O
the	O
format	O
used	O
internally	O
by	O
the	O
Text	B-Language
Encoding	I-Language
Initiative	I-Language
for	O
the	O
TEI	O
technical	O
standard	O
.	O
</s>
<s>
Although	O
ODD	O
files	O
generally	O
describe	O
the	O
difference	O
between	O
a	O
customized	O
XML	B-Protocol
format	O
and	O
the	O
full	O
TEI	O
model	O
,	O
ODD	O
also	O
can	O
be	O
used	O
to	O
describe	O
XML	B-Protocol
formats	O
that	O
are	O
entirely	O
separate	O
from	O
the	O
TEI	O
.	O
</s>
<s>
One	O
example	O
of	O
this	O
is	O
the	O
W3C	O
's	O
Internationalization	B-Language
Tag	I-Language
Set	I-Language
which	O
uses	O
the	O
ODD	O
format	O
to	O
generate	O
schemas	O
and	O
document	O
its	O
vocabulary	O
.	O
</s>
<s>
TEI	O
customizations	O
are	O
specializations	O
of	O
the	O
TEI	B-Language
XML	I-Language
specification	O
for	O
use	O
in	O
particular	O
fields	O
or	O
by	O
specific	O
communities	O
.	O
</s>
<s>
+TEI	O
projects	O
Project	O
URL	O
Strengths	O
British	O
National	O
Corpus	O
http://www.natcorp.ox.ac.uk	O
100	O
million	O
word	O
snapshot	O
of	O
current	O
English	O
Oxford	O
Text	O
Archive	O
https://ota.bodleian.ox.ac.uk/repository/xmlui/	O
>1	O
GB	O
of	O
Linguistic	O
data	O
and	O
electronic	O
texts	O
in	O
25	O
languages	O
Perseus	O
Project	O
https://www.perseus.tufts.edu/	O
Greek	O
and	O
Latin	O
texts	O
EpiDoc	O
https://sourceforge.net/p/epidoc/wiki/Home/	O
Epigraphy	O
and	O
Papyrology	O
Women	O
Writers	O
Project	O
https://wwp.northeastern.edu/	O
Early	O
modern	O
women	O
writers	O
(	O
Margaret	O
Cavendish	O
,	O
Eliza	O
Haywood	O
,	O
etc	O
.	O
)	O
</s>
<s>
2002	O
–	O
TEI	O
P4	O
released	O
,	O
moving	O
from	O
SGML	O
to	O
XML	B-Protocol
;	O
adoption	O
of	O
Unicode	O
,	O
which	O
XML	B-Protocol
parsers	I-Protocol
are	O
required	O
to	O
support	O
.	O
</s>
<s>
2007	O
–	O
TEI	O
P5	O
released	O
,	O
including	O
integration	O
with	O
the	O
xml:lang	B-Protocol
and	O
xml:id	O
attributes	O
from	O
the	O
W3C	O
(	O
these	O
had	O
previously	O
been	O
attributes	O
in	O
the	O
TEI	O
namespace	O
)	O
,	O
regularization	O
of	O
local	O
pointing	O
attributes	O
to	O
use	O
the	O
hash	O
(	O
as	O
used	O
in	O
HTML	B-Language
)	O
and	O
unification	O
of	O
the	O
ptr	O
and	O
xptr	O
tags	O
.	O
</s>
<s>
Together	O
these	O
changes	O
with	O
many	O
more	O
new	O
additions	O
make	O
P5	O
more	O
regular	O
and	O
bring	O
it	O
closer	O
to	O
current	O
xml	B-Protocol
practice	O
as	O
promoted	O
by	O
the	O
W3C	O
and	O
as	O
used	O
by	O
other	O
XML	B-Protocol
variants	O
.	O
</s>
