<s>
ratpoison	B-Language
is	O
a	O
tiling	O
window	B-Application
manager	I-Application
for	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
primarily	O
developed	O
by	O
Shawn	O
Betts	O
.	O
</s>
<s>
ratpoison	B-Language
is	O
written	O
in	O
C	B-Language
;	O
Betts	O
 '	O
StumpWM	B-Language
re-implements	O
a	O
similar	O
window	B-Application
manager	I-Application
in	O
Common	B-Language
Lisp	I-Language
.	O
</s>
<s>
The	O
user	B-Application
interface	I-Application
and	O
much	O
of	O
their	O
functionality	O
are	O
inspired	O
by	O
the	O
GNU	B-Application
Screen	I-Application
terminal	O
multiplexer	O
.	O
</s>
<s>
The	O
name	O
"	O
ratpoison	B-Language
"	O
reflects	O
its	O
major	O
design	O
goal	O
:	O
it	O
lets	O
the	O
user	O
manage	O
application	O
windows	O
without	O
using	O
a	O
mouse	B-Device
.	O
</s>
<s>
Unlike	O
other	O
tiling	O
window	B-Application
managers	I-Application
like	O
Ion	B-Application
,	O
ratpoison	B-Language
completely	O
ignores	O
the	O
mouse	B-Device
(	O
or	O
"	O
rat	O
"	O
)	O
,	O
and	O
avoids	O
window	O
decorations	O
as	O
much	O
as	O
possible	O
.	O
</s>
<s>
The	O
default	O
keybindings	O
are	O
specifically	O
designed	O
to	O
not	O
conflict	O
with	O
Emacs	B-Application
.	O
</s>
<s>
Similarly	O
,	O
Brian	O
Proffitt	O
observes	O
that	O
"	O
the	O
key	O
commands	O
are	O
well	O
explained	O
in	O
this	O
window	B-Application
manager	I-Application
's	O
man	O
pages	O
,	O
and	O
whatever	O
you	O
do	O
,	O
read	O
these	O
first	O
.	O
</s>
<s>
In	O
the	O
same	O
vein	O
,	O
Bruce	O
Byfield	O
found	O
it	O
(	O
and	O
stumpwm	B-Language
)	O
"	O
virtually	O
unusable	O
until	O
you	O
read	O
the	O
documentation	O
"	O
.	O
</s>
<s>
Penguin	O
Pete	O
highlighted	O
its	O
suitability	O
for	O
Emacs	B-Application
users	O
,	O
calling	O
it	O
"	O
not	O
so	O
much	O
a	O
window	B-Application
manager	I-Application
as	O
a	O
frame	O
manager	O
,	O
"	O
but	O
found	O
it	O
difficult	O
to	O
work	O
with	O
GIMP	B-Application
.	O
</s>
