<s>
A	O
Help	B-Protocol
key	I-Protocol
,	O
found	O
in	O
the	O
shape	O
of	O
a	O
dedicated	O
key	O
explicitly	O
labeled	O
,	O
or	O
as	O
another	O
key	O
,	O
typically	O
one	O
of	O
the	O
function	B-Application
keys	I-Application
,	O
on	O
a	O
computer	B-Device
keyboard	I-Device
,	O
is	O
a	O
key	O
which	O
,	O
when	O
pressed	O
,	O
produces	O
information	O
on	O
the	O
screen/display	O
to	O
aid	O
the	O
user	O
in	O
their	O
current	O
task	O
,	O
such	O
as	O
using	O
a	O
specific	O
function	O
in	O
an	O
application	B-Application
program	I-Application
.	O
</s>
<s>
In	O
the	O
case	O
of	O
a	O
non-dedicated	O
Help	B-Protocol
key	I-Protocol
,	O
the	O
location	O
of	O
the	O
key	O
will	O
sometimes	O
vary	O
between	O
different	O
software	O
packages	O
.	O
</s>
<s>
Most	O
common	O
in	O
computer	O
history	O
,	O
however	O
,	O
is	O
the	O
development	O
of	O
a	O
de	O
facto	O
Help	B-Protocol
key	I-Protocol
location	O
for	O
each	O
brand/family	O
of	O
computer	O
,	O
exemplified	O
by	O
the	O
use	O
of	O
F1	B-Application
on	O
IBM	O
compatible	O
PCs	O
.	O
</s>
<s>
On	O
a	O
full-sized	O
Apple	B-Device
keyboard	I-Device
,	O
the	O
help	B-Protocol
key	I-Protocol
was	O
labelled	O
simply	O
as	O
,	O
located	O
to	O
the	O
left	O
of	O
the	O
.	O
</s>
<s>
Where	O
IBM	O
compatible	O
PC	B-Device
keyboards	I-Device
had	O
the	O
,	O
Apple	B-Device
keyboards	I-Device
had	O
the	O
help	B-Protocol
key	I-Protocol
instead	O
.	O
</s>
<s>
As	O
of	O
2007	O
,	O
new	O
Apple	B-Device
keyboards	I-Device
do	O
not	O
have	O
a	O
help	B-Protocol
key	I-Protocol
.	O
</s>
<s>
In	O
its	O
place	O
,	O
a	O
full-sized	O
Apple	B-Device
keyboard	I-Device
has	O
a	O
instead	O
.	O
</s>
<s>
Instead	O
of	O
a	O
mechanical	O
help	B-Protocol
key	I-Protocol
,	O
the	O
menu	O
bar	O
for	O
most	O
applications	O
contain	O
a	O
Help	O
menu	O
as	O
a	O
matter	O
of	O
convention	O
.	O
</s>
<s>
Amiga	O
keyboards	B-Device
had	O
a	O
key	O
,	O
labelled	O
as	O
such	O
,	O
above	O
the	O
arrow	O
keys	O
on	O
the	O
keyboard	B-Device
,	O
and	O
next	O
to	O
a	O
key	O
(	O
where	O
the	O
cluster	O
is	O
on	O
a	O
standard	O
PC	B-Device
keyboard	I-Device
)	O
.	O
</s>
<s>
The	O
keyboards	B-Device
of	O
the	O
Atari	O
16	O
-	O
and	O
32-bit	O
computers	O
had	O
a	O
key	O
above	O
the	O
arrow	O
keys	O
on	O
the	O
keyboard	B-Device
.	O
</s>
<s>
Atari	O
8-bit	O
XL	O
and	O
XE	O
series	O
keyboards	B-Device
had	O
dedicated	O
keys	O
,	O
but	O
in	O
the	O
group	O
of	O
differently-styled	O
system	O
keys	O
separated	O
from	O
the	O
rest	O
of	O
the	O
keyboard	B-Device
.	O
</s>
<s>
Most	O
of	O
the	O
Sun	O
Microsystems	O
keyboards	B-Device
have	O
a	O
dedicate	O
""	O
key	O
in	O
the	O
left	O
top	O
corner	O
(	O
left	O
from	O
the	O
""	O
key	O
above	O
block	O
of	O
10	O
(	O
)	O
extra	O
keys	O
.	O
</s>
