<s>
AltGr	B-Device
(	O
also	O
Alt	B-Device
Graph	I-Device
)	O
is	O
a	O
modifier	B-Device
key	I-Device
found	O
on	O
many	O
computer	B-Device
keyboards	I-Device
(	O
rather	O
than	O
a	O
second	O
Alt	B-Device
key	I-Device
found	O
on	O
US	O
keyboards	B-Device
)	O
.	O
</s>
<s>
On	O
a	O
typical	O
Windows-compatible	O
PC	B-Device
keyboard	I-Device
,	O
the	O
AltGr	B-Device
key	I-Device
,	O
when	O
present	O
,	O
takes	O
the	O
place	O
of	O
the	O
right-hand	O
Alt	B-Device
key	I-Device
.	O
</s>
<s>
The	O
key	O
at	O
this	O
location	O
will	O
operate	O
as	O
AltGr	B-Device
if	O
a	O
keyboard	B-Device
layout	O
using	O
AltGr	B-Device
is	O
chosen	O
in	O
the	O
operating	O
system	O
,	O
regardless	O
of	O
what	O
is	O
engraved	O
on	O
the	O
key	O
.	O
</s>
<s>
In	O
macOS	B-Application
,	O
the	O
Option	B-Device
key	I-Device
has	O
functions	O
similar	O
to	O
the	O
AltGr	B-Device
key	I-Device
.	O
</s>
<s>
The	O
AltGr	B-Device
key	I-Device
is	O
used	O
as	O
an	O
additional	O
Shift	B-Device
key	I-Device
,	O
to	O
provide	O
a	O
third	O
and	O
a	O
fourth	O
(	O
when	O
Shift	B-Device
is	O
also	O
pressed	O
)	O
grapheme	O
for	O
most	O
keys	O
.	O
</s>
<s>
Some	O
languages	O
such	O
as	O
Bengali	O
use	O
this	O
key	O
when	O
the	O
number	O
of	O
letters	O
of	O
their	O
alphabet	O
is	O
too	O
large	O
for	O
a	O
standard	O
keyboard	B-Device
.	O
</s>
<s>
For	O
example	O
,	O
on	O
the	O
US-International	O
keyboard	B-Device
layout	O
,	O
the	O
key	O
can	O
be	O
used	O
to	O
insert	O
four	O
different	O
characters	O
:	O
</s>
<s>
IBM	O
states	O
that	O
AltGr	B-Device
is	O
an	O
abbreviation	O
for	O
alternate	O
graphic	O
.	O
</s>
<s>
A	O
key	O
labelled	O
with	O
some	O
variation	O
of	O
"	O
Alt	B-Device
Graphic	I-Device
"	O
was	O
on	O
many	O
computer	B-Device
keyboards	I-Device
before	O
the	O
Windows	O
international	O
layouts	O
.	O
</s>
<s>
This	O
likely	O
was	O
the	O
intended	O
purpose	O
of	O
the	O
Alt	B-Device
key	I-Device
on	O
PC	B-Device
keyboards	I-Device
,	O
however	O
software	O
quickly	O
used	O
this	O
as	O
a	O
combination	O
key	O
for	O
shortcuts	O
,	O
requiring	O
a	O
new	O
key	O
for	O
producing	O
additional	O
characters	O
.	O
</s>
<s>
Windows	O
interprets	O
as	O
,	O
to	O
accommodate	O
some	O
compact	O
keyboards	B-Device
like	O
those	O
of	O
netbooks	B-Device
which	O
have	O
neither	O
the	O
AltGr	B-Device
key	I-Device
or	O
a	O
right-hand	O
Alt	B-Device
key	I-Device
.	O
</s>
<s>
Because	O
of	O
this	O
feature	O
,	O
Microsoft	O
advises	O
that	O
not	O
be	O
used	O
as	O
part	O
of	O
any	O
application	O
keyboard	B-Device
shortcut	O
,	O
as	O
it	O
would	O
prevent	O
typing	O
the	O
matching	O
character	O
on	O
such	O
keyboards	B-Device
.	O
</s>
<s>
In	O
most	O
of	O
the	O
keyboard	B-Device
diagrams	O
the	O
symbol	O
you	O
get	O
when	O
holding	O
down	O
AltGr	B-Device
is	O
in	O
blue	O
in	O
the	O
lower-right	O
of	O
the	O
corner	O
.	O
</s>
<s>
If	O
different	O
,	O
the	O
symbol	O
for	O
Shift+AltGr	O
is	O
shown	O
in	O
the	O
upper-right	O
.	O
</s>
<s>
The	O
Windows	O
version	O
of	O
the	O
Belgian	O
keyboard	B-Device
may	O
only	O
support	O
a	O
subset	O
of	O
these	O
characters	O
.	O
</s>
<s>
Several	O
of	O
the	O
AltGr	B-Device
combinations	O
are	O
themselves	O
dead	B-Device
keys	I-Device
,	O
which	O
are	O
followed	O
by	O
another	O
letter	O
to	O
produce	O
an	O
accented	O
version	O
of	O
that	O
letter	O
.	O
</s>
<s>
key	O
,	O
which	O
is	O
physically	O
absent	O
on	O
non-Brazilian	O
keyboards	B-Device
.	O
</s>
<s>
On	O
AZERTY	O
keyboards	B-Device
,	O
AltGr	B-Device
enables	O
the	O
user	O
to	O
type	O
the	O
following	O
characters	O
:	O
</s>
<s>
On	O
German	O
keyboards	B-Device
,	O
AltGr	B-Device
enables	O
the	O
user	O
to	O
type	O
the	O
following	O
characters	O
,	O
which	O
are	O
indicated	O
on	O
the	O
keyboard	B-Device
:	O
</s>
<s>
Windows	B-Application
8	I-Application
introduced	O
the	O
ability	O
of	O
pressing	O
to	O
produce	O
ẞ	O
(	O
capital	O
ß	O
)	O
.	O
</s>
<s>
Even	O
though	O
this	O
is	O
usually	O
not	O
indicated	O
on	O
the	O
physical	O
keyboard	B-Device
—	O
potentially	O
due	O
to	O
a	O
lack	O
of	O
space	O
,	O
since	O
the	O
ß-key	O
already	O
has	O
three	O
different	O
levels	O
(	O
→	O
"	O
ß	O
"	O
,	O
→	O
"	O
?	O
</s>
<s>
"	O
,	O
and	O
,	O
as	O
shown	O
above	O
,	O
→	O
"	O
\	O
 "	O
)	O
—	O
,	O
it	O
can	O
be	O
seen	O
in	O
the	O
Windows	O
On-Screen	B-Device
Keyboard	I-Device
by	O
selecting	O
the	O
necessary	O
keys	O
with	O
the	O
German	O
keyboard	B-Device
layout	O
selected	O
.	O
</s>
<s>
Some	O
newer	O
types	O
of	O
German	O
keyboards	B-Device
offer	O
the	O
assignment	O
→	O
capital	O
ß	O
.	O
</s>
<s>
On	O
Hebrew	O
keyboards	B-Device
,	O
AltGr	B-Device
enables	O
the	O
user	O
to	O
type	O
the	O
Hebrew	O
vowels	O
and	O
pronunciation	O
marks	O
.	O
</s>
<s>
Using	O
a	O
Hebrew	O
keyboard	B-Device
,	O
one	O
may	O
write	O
in	O
Yiddish	O
as	O
the	O
two	O
languages	O
share	O
many	O
letters	O
.	O
</s>
<s>
However	O
,	O
Yiddish	O
has	O
some	O
additional	O
digraphs	O
not	O
otherwise	O
found	O
in	O
Hebrew	O
,	O
which	O
are	O
entered	O
via	O
AltGr	B-Device
:	O
</s>
<s>
On	O
Italian	O
keyboards	B-Device
,	O
AltGr	B-Device
enables	O
the	O
user	O
to	O
type	O
the	O
following	O
characters	O
:	O
</s>
<s>
There	O
is	O
an	O
alternate	O
layout	O
,	O
which	O
differ	O
just	O
in	O
disposition	O
of	O
characters	O
accessible	O
through	O
AltGr	B-Device
and	O
includes	O
the	O
tilde	O
and	O
the	O
curly	O
brackets	O
.	O
</s>
<s>
The	O
following	O
letters	O
can	O
be	O
input	O
in	O
the	O
Latvian	O
keyboard	B-Device
layout	O
using	O
AltGr	B-Device
:	O
</s>
<s>
On	O
Macedonian	O
keyboards	B-Device
,	O
AltGr	B-Device
enables	O
the	O
user	O
to	O
type	O
the	O
following	O
characters	O
:	O
</s>
<s>
The	O
keyboard	B-Device
layouts	O
in	O
the	O
Nordic	O
countries	O
Denmark	O
(	O
DK	O
)	O
,	O
Faroe	O
Islands	O
(	O
FO	O
)	O
,	O
Finland	O
(	O
FI	O
)	O
,	O
Norway	O
(	O
NO	O
)	O
and	O
Sweden	O
(	O
SE	O
)	O
as	O
well	O
as	O
in	O
Estonia	O
(	O
EE	O
)	O
are	O
largely	O
similar	O
to	O
each	O
other	O
.	O
</s>
<s>
Generally	O
the	O
AltGr	B-Device
key	I-Device
can	O
be	O
used	O
to	O
create	O
the	O
following	O
characters	O
:	O
</s>
<s>
Other	O
AltGr	B-Device
combinations	O
are	O
peculiar	O
to	O
just	O
some	O
of	O
the	O
countries	O
:	O
</s>
<s>
The	O
Finnish	O
multilingual	O
keyboard	B-Device
standard	O
adds	O
many	O
new	O
characters	O
to	O
the	O
traditional	O
layout	O
via	O
the	O
AltGr	B-Device
key	I-Device
,	O
as	O
shown	O
in	O
the	O
image	O
below	O
(	O
the	O
blue	O
characters	O
can	O
be	O
written	O
with	O
the	O
AltGr	B-Device
key	I-Device
;	O
several	O
dead	B-Device
key	I-Device
diacritics	O
,	O
shown	O
in	O
red	O
,	O
are	O
also	O
available	O
as	O
an	O
AltGr	B-Device
combination	O
)	O
.	O
</s>
<s>
Typewriters	O
in	O
Poland	O
used	O
a	O
QWERTZ	B-Language
layout	O
specifically	O
designed	O
for	O
the	O
Polish	O
language	O
with	O
accented	O
letters	O
in	O
the	O
Polish	O
alphabet	O
obtainable	O
directly	O
.	O
</s>
<s>
Most	O
had	O
US	O
keyboards	B-Device
,	O
and	O
various	O
methods	O
were	O
devised	O
to	O
make	O
available	O
the	O
accented	O
Polish	O
letters	O
.	O
</s>
<s>
An	O
established	O
method	O
was	O
to	O
configure	O
the	O
rightAlt	O
key	O
as	O
an	O
AltGr	B-Device
key	I-Device
and	O
to	O
use	O
it	O
in	O
combination	O
with	O
a	O
Latin	O
base	O
letter	O
to	O
obtain	O
the	O
equivalent	O
precomposed	O
character	O
(	O
accented	O
form	O
of	O
the	O
letter	O
)	O
.	O
</s>
<s>
Nowadays	O
nearly	O
all	O
PCs	O
in	O
Poland	O
have	O
standard	O
US	O
keyboards	B-Device
and	O
use	O
the	O
AltGr	B-Device
method	O
to	O
enter	O
Polish	O
diacritics	O
.	O
</s>
<s>
This	O
keyboard	B-Device
mapping	O
is	O
referred	O
to	O
as	O
the	O
Polish	O
programmers	O
 '	O
layout	O
(	O
)	O
or	O
simply	O
Polish	O
layout	O
.	O
</s>
<s>
Computer	B-Device
keyboards	I-Device
with	O
this	O
layout	O
are	O
available	O
,	O
though	O
difficult	O
to	O
find	O
,	O
and	O
supported	O
by	O
a	O
number	O
of	O
operating	O
systems	O
;	O
they	O
are	O
known	O
as	O
Polish	O
typists	O
 '	O
layout	O
(	O
)	O
.	O
</s>
<s>
Older	O
Polish	O
versions	O
of	O
Microsoft	B-Application
Windows	I-Application
used	O
this	O
layout	O
,	O
describing	O
it	O
as	O
Polish	O
layout	O
.	O
</s>
<s>
The	O
keymap	O
with	O
the	O
AltGr	B-Device
key	I-Device
:	O
</s>
<s>
On	O
South	O
Slavic	O
Latin	O
(	O
used	O
in	O
Croatia	O
,	O
Slovenia	O
,	O
Bosnia	O
and	O
Herzegovina	O
,	O
Montenegro	O
and	O
Serbia	O
)	O
and	O
on	O
Czech	O
keyboards	B-Device
,	O
the	O
following	O
letters	O
and	O
special	O
characters	O
are	O
created	O
using	O
AltGr	B-Device
:	O
</s>
<s>
South	O
Slavic	O
cyrillic	O
keyboards	B-Device
use	O
a	O
different	O
layout	O
.	O
</s>
<s>
On	O
,	O
AltGr	B-Device
in	O
combination	O
with	O
the	O
following	O
keys	O
types	O
the	O
following	O
characters	O
:	O
</s>
<s>
Switzerland	B-Protocol
has	O
four	O
national	O
Languages	O
(	O
German	O
,	O
French	O
,	O
Italian	O
,	O
and	O
Romansh	O
)	O
.	O
</s>
<s>
The	O
Swiss	O
keyboard	B-Device
layout	O
is	O
therefore	O
designed	O
with	O
compatibility	O
in	O
mind	O
for	O
all	O
four	O
languages	O
.	O
</s>
<s>
In	O
German-speaking	O
and	O
Romansh-speaking	O
Switzerland	B-Protocol
(	O
as	O
well	O
as	O
Cezchia	O
)	O
,	O
the	O
Swiss	O
German	O
layout	O
is	O
used	O
,	O
while	O
in	O
the	O
French-speaking	O
and	O
Italian-speaking	O
Switzerland	B-Protocol
,	O
the	O
Swiss	O
French	O
layout	O
is	O
used	O
.	O
</s>
<s>
In	O
Turkish	O
keyboard	B-Device
variants	O
the	O
AltGr	B-Device
can	O
be	O
used	O
to	O
display	O
the	O
following	O
characters	O
:	O
</s>
<s>
In	O
Ukrainian	O
keyboard	B-Device
combination	O
(	O
or	O
as	O
it	O
is	O
written	O
in	O
Cyrillic	O
keyboards	B-Device
gives	O
letter	O
ґ	O
and	O
Ґ	O
.	O
</s>
<s>
In	O
UK	O
and	O
Ireland	O
keyboard	B-Device
layouts	O
,	O
only	O
two	O
alternative	O
use	O
symbols	O
are	O
printed	O
on	O
most	O
keyboards	B-Device
,	O
which	O
require	O
the	O
AltGr	B-Device
key	I-Device
to	O
function	O
.	O
</s>
<s>
Using	O
the	O
AltGr	B-Device
key	I-Device
on	O
Linux	B-Application
produces	O
many	O
foreign	O
characters	O
and	O
international	O
symbols	O
,	O
e.g.	O
</s>
<s>
¹²³€½{[]}@łe¶ŧ←↓→øþæßðđŋħjĸł«»¢“”nµΩŁE®Ŧ¥↑ıØÞÆ§ÐªŊĦJ&Łxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx1©‘’Nº×÷·	O
(	O
If	O
reconfigured	O
as	O
a	O
compose	B-Device
key	I-Device
,	O
an	O
even	O
larger	O
repertoire	O
is	O
available	O
)	O
.	O
</s>
<s>
With	O
the	O
UK	O
extended	O
keyboard	B-Device
setting	O
(	O
below	O
)	O
,	O
ChromeOS	B-Operating_System
offers	O
a	O
large	O
repertoire	O
of	O
symbols	O
and	O
precomposed	O
characters	O
.	O
</s>
<s>
For	O
the	O
diacritics	O
used	O
by	O
Welsh	O
( ŵ	O
and	O
ŷ	O
)	O
and	O
Scottish	O
Gaelic	O
( à	O
,	O
è	O
,	O
ì	O
,	O
ò	O
and	O
ù	O
)	O
,	O
the	O
UK	O
extended	O
keyboard	B-Device
setting	O
is	O
needed	O
.	O
</s>
<s>
This	O
makes	O
available	O
(	O
for	O
circumflex	O
accent	O
)	O
and	O
(	O
for	O
grave	O
accent	O
)	O
as	O
dead	B-Device
keys	I-Device
.	O
</s>
<s>
The	O
UK-Extended	O
keyboard	B-Device
mapping	O
(	O
available	O
with	O
Microsoft	B-Application
Windows	I-Application
,	O
Linux	B-Application
and	O
ChromeOS	B-Operating_System
)	O
allows	O
many	O
characters	O
with	O
diacritical	O
marks	O
(	O
including	O
those	O
used	O
in	O
other	O
European	O
countries	O
)	O
to	O
be	O
generated	O
by	O
using	O
the	O
AltGr	B-Device
key	I-Device
or	O
dead	B-Device
keys	I-Device
in	O
combination	O
with	O
others	O
.	O
</s>
<s>
+	O
UK	O
extended	O
layout	O
under	O
ChromeOS	B-Operating_System
¬	O
!	O
</s>
<s>
1	O
"	O
2	O
£	O
3	O
$	O
4	O
%	O
5	O
^	O
6	O
&	O
7	O
*	O
8	O
(	O
9	O
)	O
0	O
}_	O
-	O
+	O
=	O
tabQ	O
q	O
W	O
w	O
E	O
e	O
R	O
r	O
T	O
t	O
Y	O
y	O
U	O
u	O
I	O
i	O
O	O
o	O
P	O
p	O
{	O
[	O
}	O
]	O
🔍A	O
a	O
S	O
s	O
D	O
d	O
F	O
f	O
G	O
g	O
H	O
h	O
J	O
j	O
K	O
k	O
L	O
l	O
:	O
;	O
@	O
'	O
~	O
#	O
shift|	O
\	O
Z	O
z	O
X	B-Operating_System
x	B-Operating_System
C	O
c	O
V	O
v	O
B	O
b	O
N	O
n	O
M	O
m	O
< , >	O
.	O
</s>
<s>
Notes	O
:	O
Dotted	O
circle	O
( ◌	O
)	O
is	O
used	O
here	O
to	O
indicate	O
a	O
dead	B-Device
key	I-Device
.	O
</s>
<s>
The	O
(	O
grave	O
accent	O
)	O
key	O
is	O
the	O
only	O
one	O
that	O
acts	O
as	O
a	O
free-standing	O
dead	B-Device
key	I-Device
and	O
thus	O
does	O
not	O
respond	O
as	O
shown	O
on	O
the	O
key-cap	O
.	O
</s>
<s>
All	O
others	O
are	O
invoked	O
by	O
AltGr	B-Device
.	O
</s>
<s>
For	O
a	O
complete	O
list	O
of	O
the	O
characters	O
available	O
using	O
dead	B-Device
keys	I-Device
,	O
see	O
QWERTY	O
#ChromeOS	O
.	O
</s>
<s>
Most	O
keyboards	B-Device
sold	O
in	O
the	O
US	O
do	O
not	O
have	O
an	O
(	O
engraved	O
)	O
key	O
.	O
</s>
<s>
However	O
,	O
if	O
there	O
is	O
an	O
right-hand	O
key	O
it	O
will	O
act	O
as	O
if	O
a	O
layout	O
using	O
it	O
is	O
installed	O
(	O
conversely	O
a	O
foreign	O
keyboard	B-Device
will	O
act	O
like	O
the	O
right-hand	O
if	O
the	O
standard	O
US	O
keyboard	B-Device
layout	O
is	O
installed	O
)	O
.	O
</s>
<s>
Microsoft	O
provides	O
a	O
US-International	O
keyboard	B-Device
layout	O
that	O
uses	O
(	O
or	O
right-hand	O
or	O
)	O
key	O
to	O
produce	O
more	O
characters	O
:	O
</s>
<s>
Red	O
characters	O
are	O
dead	B-Device
keys	I-Device
;	O
for	O
example	O
ä	O
can	O
be	O
entered	O
with	O
.	O
</s>
<s>
Other	O
operating	O
systems	O
such	O
as	O
Linux	B-Application
and	O
ChromeOS	B-Operating_System
follow	O
this	O
layout	O
but	O
increase	O
the	O
repertoire	O
of	O
glyphs	B-Application
provided	O
.	O
</s>
<s>
In	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
(	O
Linux	B-Application
,	O
BSD	O
,	O
Unix	O
)	O
,	O
AltGr	B-Device
can	O
often	O
be	O
used	O
to	O
produce	O
additional	O
characters	O
with	O
almost	O
every	O
key	O
on	O
the	O
keyboard	B-Device
.	O
</s>
<s>
Furthermore	O
,	O
with	O
some	O
keys	O
,	O
AltGr	B-Device
will	O
produce	O
a	O
dead	B-Device
key	I-Device
;	O
for	O
example	O
on	O
a	O
UK	O
keyboard	B-Device
,	O
semicolon	O
can	O
be	O
used	O
to	O
add	O
an	O
acute	O
accent	O
to	O
a	O
base	O
letter	O
,	O
and	O
left	O
square	O
bracket	O
can	O
be	O
used	O
to	O
add	O
a	O
trema	O
:	O
</s>
<s>
This	O
use	O
of	O
dead	B-Device
keys	I-Device
enables	O
one	O
to	O
type	O
a	O
wide	O
variety	O
of	O
precomposed	O
characters	O
that	O
combine	O
various	O
diacritics	O
with	O
either	O
uppercase	O
or	O
lowercase	O
letters	O
,	O
achieving	O
a	O
similar	O
effect	O
to	O
the	O
Compose	B-Device
key	I-Device
.	O
</s>
