<s>
cwm	B-Application
(	O
Calm	B-Application
Window	I-Application
Manager	I-Application
)	O
is	O
a	O
stacking	B-Device
window	I-Device
manager	I-Device
for	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
.	O
</s>
<s>
While	O
it	O
is	O
primarily	O
developed	O
as	O
a	O
part	O
of	O
OpenBSD	B-Operating_System
's	O
base	O
system	O
,	O
portable	O
versions	O
are	O
available	O
on	O
other	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
Development	O
of	O
cwm	B-Application
started	O
from	O
patches	O
to	O
evilwm	O
by	O
Marius	O
Aamodt	O
Eriksen	O
.	O
</s>
<s>
To	O
ease	O
the	O
implementation	O
of	O
new	O
features	O
,	O
cwm	B-Application
was	O
eventually	O
rewritten	O
using	O
some	O
code	O
from	O
9wm	B-Language
.	O
</s>
<s>
In	O
April	O
2007	O
,	O
cwm	B-Application
was	O
imported	O
into	O
OpenBSD	B-Operating_System
source	O
tree	O
.	O
</s>
<s>
By	O
January	O
2008	O
,	O
a	O
substantial	O
part	O
of	O
the	O
original	O
source	O
code	O
,	O
including	O
all	O
of	O
the	O
9wm	B-Language
code	O
,	O
was	O
rewritten	O
.	O
</s>
<s>
cwm	B-Application
has	O
been	O
distributed	O
with	O
OpenBSD	B-Operating_System
since	O
version	O
4.2	O
,	O
where	O
it	O
replaced	O
wm2	B-Device
.	O
</s>
<s>
A	O
third-party	O
Linux	B-Application
port	O
also	O
exists	O
.	O
</s>
<s>
cwm	B-Application
is	O
a	O
stacking	B-Device
window	I-Device
manager	I-Device
oriented	O
towards	O
heavy	O
keyboard	O
usage	O
,	O
small	O
footprint	O
and	O
ease	O
of	O
use	O
.	O
</s>
<s>
While	O
it	O
lacks	O
explicit	O
virtual	B-Application
desktops	I-Application
functionality	O
,	O
it	O
can	O
be	O
emulated	O
by	O
using	O
the	O
window	O
groups	O
mechanism	O
.	O
</s>
<s>
cwm	B-Application
does	O
not	O
draw	O
window	O
decorations	O
except	O
for	O
a	O
1-pixel	O
border	O
around	O
windows	O
.	O
</s>
<s>
cwm	B-Application
includes	O
several	O
menus	O
:	O
</s>
<s>
cwm	B-Application
allows	O
raising	O
,	O
hiding	O
,	O
switching	O
between	O
,	O
and	O
searching	O
for	O
windows	O
using	O
just	O
the	O
keyboard	O
,	O
making	O
it	O
suitable	O
to	O
use	O
as	O
terminal	B-Application
emulator	I-Application
multiplexer	O
.	O
</s>
<s>
cwm	B-Application
is	O
generally	O
well	O
received	O
in	O
software	B-Device
minimalist	I-Device
communities	O
.	O
</s>
<s>
cwm	B-Application
is	O
noted	O
to	O
be	O
used	O
mainly	O
due	O
to	O
its	O
status	O
as	O
one	O
of	O
the	O
default	O
window	O
managers	O
in	O
OpenBSD	B-Operating_System
,	O
though	O
other	O
reasons	O
are	O
sometimes	O
cited	O
.	O
</s>
<s>
cwm	B-Application
is	O
also	O
praised	O
for	O
its	O
flexibility	O
,	O
ease	O
of	O
use	O
,	O
and	O
the	O
fact	O
that	O
it	O
can	O
be	O
used	O
without	O
a	O
mouse	O
.	O
</s>
