<s>
In	O
computing	O
,	O
control-	B-Device
\	I-Device
is	O
a	O
control	O
character	O
in	O
ASCII	B-Protocol
code	I-Protocol
,	O
also	O
known	O
as	O
the	O
file	O
separator	O
(	O
FS	O
)	O
character	O
.	O
</s>
<s>
It	O
is	O
generated	O
by	O
pressing	O
the	O
key	O
while	O
holding	O
down	O
the	O
key	O
on	O
a	O
computer	B-Device
keyboard	I-Device
.	O
</s>
<s>
Under	O
most	O
UNIX-based	O
operating	O
systems	O
control-	B-Device
\	I-Device
is	O
used	O
to	O
terminate	O
a	O
running	O
process	B-Operating_System
from	O
a	O
command	B-Operating_System
shell	I-Operating_System
and	O
have	O
it	O
produce	O
a	O
memory	B-Error_Name
core	I-Error_Name
dump	I-Error_Name
by	O
sending	O
it	O
a	O
SIGQUIT	B-General_Concept
signal	B-Operating_System
.	O
</s>
<s>
In	O
the	O
Emacs	B-Application
text	O
editor	O
,	O
it	O
is	O
the	O
default	O
keystroke	O
mapping	O
for	O
autocompletion	O
.	O
</s>
