<s>
Universal	B-Application
Network	I-Application
Objects	I-Application
(	O
UNO	O
)	O
is	O
the	O
component	O
model	O
used	O
in	O
the	O
OpenOffice.org	B-Application
and	O
LibreOffice	B-Application
computer	O
software	O
application	B-Application
suites	I-Application
.	O
</s>
<s>
Users	O
can	O
implement	O
or	O
access	O
UNO	O
components	O
from	O
any	O
programming	O
language	O
for	O
which	O
a	O
language	B-Application
binding	I-Application
exists	O
.	O
</s>
<s>
Complete	O
UNO	O
language	B-Application
bindings	I-Application
exist	O
for	O
C++	B-Language
(	O
compiler-dependent	O
)	O
,	O
Java	B-Language
,	O
Object	B-Application
REXX	I-Application
,	O
Python	B-Language
,	O
and	O
Tcl	B-Operating_System
.	O
</s>
<s>
Bindings	O
allowing	O
access	O
,	O
but	O
not	O
writing	O
,	O
to	O
components	O
exist	O
for	O
StarOffice	B-Operating_System
Basic	I-Operating_System
,	O
OLE	B-Application
Automation	I-Application
and	O
the	O
.NET	O
Common	O
Language	O
Infrastructure	O
.	O
</s>
<s>
Universal	B-Application
Network	I-Application
Objects	I-Application
operate	O
within	O
the	O
UNO	O
Runtime	O
Environment	O
(	O
URE	O
)	O
.	O
</s>
<s>
The	O
Apache	B-Application
OpenOffice	I-Application
version	O
of	O
UNO	O
is	O
released	O
under	O
the	O
terms	O
Apache	B-Application
License	I-Application
(	O
Version	O
2	O
)	O
as	O
free	B-Application
and	I-Application
open	I-Application
source	I-Application
software	I-Application
.	O
</s>
<s>
Examples	O
:	O
an	O
external	O
program	O
can	O
export	O
an	O
ODT	B-Application
file	I-Application
as	O
a	O
PDF	B-Application
file	I-Application
,	O
or	O
import	O
and	O
convert	O
a	O
DOCX	B-Operating_System
,	O
calling	O
LibreOffice	B-Application
by	O
the	O
UNO	O
interface	O
.	O
</s>
<s>
Another	O
external	O
program	O
can	O
access	O
a	O
cell	O
and	O
formulas	O
from	O
LibreOffice	B-Application
Calc	O
file	O
.	O
</s>
<s>
Programmers	O
can	O
write	O
and	O
integrate	O
their	O
own	O
UNO	O
components	O
to	O
OpenOffice/LibreOffice	O
.	O
</s>
<s>
Those	O
components	O
can	O
be	O
added	O
to	O
the	O
LibreOffice	B-Application
menus	O
and	O
toolbars	O
;	O
they	O
are	O
called	O
"	O
Add-Ons	O
"	O
.	O
</s>
<s>
The	O
Add-Ons	O
can	O
extend	O
the	O
functionality	O
of	O
LibreOffice	B-Application
.	O
</s>
<s>
Register	O
the	O
new	O
components	O
within	O
LibreOffice	B-Application
.	O
</s>
