<s>
Enlightenment	O
,	O
also	O
known	O
simply	O
as	O
E	O
,	O
is	O
a	O
compositing	B-Operating_System
window	I-Operating_System
manager	I-Operating_System
for	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
.	O
</s>
<s>
Enlightenment	O
includes	O
functions	O
to	O
provide	O
a	O
graphical	O
shell	O
and	O
can	O
be	O
used	O
in	O
conjunction	O
with	O
programs	O
written	O
for	O
GNOME	B-Application
or	O
KDE	B-Application
.	O
</s>
<s>
When	O
used	O
together	O
with	O
the	O
Enlightenment	B-Library
Foundation	I-Library
Libraries	I-Library
(	O
EFL	B-Library
)	O
,	O
Enlightenment	O
can	O
refer	O
to	O
an	O
entire	O
desktop	O
environment	O
.	O
</s>
