<s>
Xena	B-Language
is	O
open-source	B-Application
software	I-Application
for	O
use	O
in	O
digital	O
preservation	O
.	O
</s>
<s>
Xena	B-Language
is	O
short	O
for	O
XML	O
Electronic	O
Normalising	O
for	O
Archives	B-Application
.	O
</s>
<s>
Xena	B-Language
is	O
a	O
Java	B-Language
application	O
that	O
was	O
developed	O
by	O
the	O
National	O
Archives	B-Application
of	O
Australia	O
.	O
</s>
<s>
It	O
is	O
available	O
free	O
of	O
charge	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
Source	O
code	O
and	O
binaries	O
for	O
Linux	B-Application
,	O
OS	B-Operating_System
X	I-Operating_System
and	O
Windows	O
are	O
available	O
from	O
SourceForge	B-Application
.	O
</s>
<s>
Xena	B-Language
attempts	O
to	O
avoid	O
digital	O
obsolescence	O
by	O
converting	O
files	O
into	O
an	O
openly	O
specified	O
format	O
,	O
such	O
as	O
ODF	B-Application
or	O
PNG	O
.	O
</s>
<s>
If	O
the	O
file	O
format	O
is	O
not	O
supported	O
or	O
the	O
Binary	O
Normalisation	O
option	O
is	O
selected	O
,	O
Xena	B-Language
will	O
perform	O
ASCII	B-Protocol
Base64	B-Protocol
encoding	I-Protocol
on	O
binary	O
files	O
and	O
wrap	O
the	O
output	O
in	O
XML	O
metadata	O
.	O
</s>
<s>
The	O
resulting	O
.xena	B-Language
file	O
is	O
plain	O
text	O
,	O
although	O
the	O
content	O
of	O
the	O
data	O
itself	O
is	O
not	O
directly	O
human-readable	O
.	O
</s>
<s>
The	O
exact	O
original	O
file	O
can	O
be	O
retrieved	O
by	O
stripping	O
the	O
metadata	O
and	O
reversing	O
the	O
Base64	B-Protocol
encoding	I-Protocol
,	O
using	O
an	O
internal	O
viewer	O
.	O
</s>
<s>
Platforms	O
supported	O
by	O
Xena	B-Language
are	O
Microsoft	B-Application
Windows	I-Application
,	O
Linux	B-Application
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
.	O
</s>
<s>
Xena	B-Language
uses	O
a	O
series	O
of	O
plugins	O
to	O
identify	O
file	O
formats	O
and	O
convert	O
them	O
to	O
an	O
appropriate	O
openly	O
specified	O
format	O
.	O
</s>
<s>
Xena	B-Language
has	O
an	O
application	B-Application
programming	I-Application
interface	I-Application
which	O
allows	O
any	O
reasonably	O
skilled	O
Java	B-Language
developer	O
to	O
develop	O
a	O
plugin	O
to	O
cover	O
a	O
new	O
file	O
type	O
.	O
</s>
<s>
Xena	B-Language
can	O
process	O
individual	O
files	O
or	O
whole	O
directories	O
.	O
</s>
<s>
Xena	B-Language
can	O
create	O
plain	O
text	O
versions	O
of	O
file	O
formats	O
such	O
as	O
TIFF	O
,	O
Word	B-Application
and	O
PDF	B-Application
,	O
with	O
the	O
use	O
of	O
Tesseract	B-Language
(	O
software	O
)	O
.	O
</s>
<s>
The	O
Xena	B-Language
interface	O
or	O
Xena	B-Language
Viewer	O
can	O
be	O
used	O
to	O
view	O
or	O
export	O
a	O
Xena	B-Language
file	O
(	O
extension	O
.xena	B-Language
)	O
in	O
its	O
target	O
file	O
format	O
.	O
</s>
<s>
The	O
Xena	B-Language
Viewer	O
supports	O
bulk	O
export	O
of	O
Xena	B-Language
files	O
to	O
target	O
file	O
formats	O
.	O
</s>
<s>
Xena	B-Language
can	O
be	O
used	O
via	O
its	O
graphical	B-Application
user	I-Application
interface	I-Application
or	O
the	O
command	B-Application
line	I-Application
.	O
</s>
<s>
For	O
Xena	B-Language
to	O
be	O
fully	O
functional	O
,	O
it	O
requires	O
a	O
local	O
installation	O
of	O
the	O
following	O
external	O
software	O
:	O
</s>
<s>
Readpst	O
-	O
to	O
convert	O
Microsoft	B-Application
Outlook	I-Application
PST	B-Operating_System
files	I-Operating_System
to	O
XML	O
.	O
</s>
<s>
FLAC	B-Application
-	O
to	O
convert	O
audio	O
files	O
to	O
FLAC	B-Application
format	O
.	O
</s>
<s>
This	O
is	O
also	O
required	O
to	O
play	O
back	O
audio	O
files	O
using	O
Xena	B-Language
.	O
</s>
<s>
Xena	B-Language
will	O
recognize	O
and	O
process	O
the	O
file	O
types	O
listed	O
below	O
,	O
plus	O
a	O
few	O
others	O
of	O
minor	O
importance	O
.	O
</s>
<s>
BMP	B-Device
,	O
GIF	O
,	O
PSD	B-Operating_System
,	O
PCX	O
,	O
RAS	B-Algorithm
,	O
and	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
XBM	B-Device
and	O
XPM	O
bitmap	O
files	O
are	O
converted	O
to	O
PNG	O
;	O
TIFF	O
files	O
additionally	O
get	O
embedded	O
metadata	O
stored	O
in	O
Xena	B-Language
XML	O
.	O
</s>
<s>
If	O
the	O
Tesseract	B-Language
OCR	I-Language
software	O
is	O
installed	O
,	O
text	O
will	O
be	O
extracted	O
from	O
TIFF	O
files	O
.	O
</s>
<s>
Files	O
are	O
extracted	O
from	O
archives	B-Application
(	O
ZIP	B-General_Concept
,	O
GZIP	B-Application
,	O
TAR/TAR.gz	B-Application
,	O
JAR	B-Language
,	O
WAR	B-Language
,	O
Mac	O
binary	O
)	O
and	O
normalised	O
into	O
a	O
separate	O
Xena	B-Language
file	O
.	O
</s>
<s>
A	O
Xena	B-Language
index	O
file	O
is	O
created	O
,	O
which	O
when	O
opened	O
in	O
the	O
internal	O
Xena	B-Language
viewer	O
will	O
display	O
the	O
files	O
in	O
a	O
table	O
.	O
</s>
<s>
MP3	B-Application
,	O
WAV	O
,	O
AIFF	O
,	O
and	O
OGG	B-Algorithm
formats	O
are	O
converted	O
to	O
FLAC	B-Application
files	O
.	O
</s>
<s>
An	O
April	O
22	O
,	O
2010	O
review	O
in	O
Practical	O
e-Records	O
rated	O
Xena	B-Language
at	O
82/100	O
points	O
.	O
</s>
<s>
At	O
present	O
Xena	B-Language
has	O
no	O
target	O
preservation	O
format	O
for	O
video	O
files	O
.	O
</s>
