<s>
The	O
Composite	O
Extension	O
of	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
renders	O
the	O
graphical	O
output	O
of	O
clients	O
"	O
to	O
...	O
an	O
off-screen	B-Algorithm
buffer	I-Algorithm
.	O
</s>
<s>
The	O
off-screen	B-Algorithm
buffer	I-Algorithm
can	O
be	O
automatically	O
merged	O
into	O
the	O
parent	O
window	O
or	O
merged	O
by	O
external	O
programs	O
,	O
called	O
compositing	O
managers.	O
"	O
</s>
<s>
This	O
enabled	O
the	O
creation	O
of	O
compositing	B-Operating_System
window	I-Operating_System
managers	I-Operating_System
for	O
X	B-Operating_System
,	O
capable	O
of	O
effects	O
like	O
transparency	O
,	O
3D	O
rotation	O
,	O
and	O
jiggly	O
windows	O
.	O
</s>
<s>
The	O
composite	O
extension	O
was	O
added	O
to	O
X.org	B-Operating_System
in	O
version	O
X11R6.8	O
in	O
September	O
2004	O
.	O
</s>
