<s>
ISO/IEC	O
8859-9:1999	O
,	O
Information	O
technology	O
—	O
8-bit	O
single-byte	O
coded	O
graphic	O
character	B-General_Concept
sets	I-General_Concept
—	O
Part	O
9	B-Application
:	O
Latin	O
alphabet	O
No	O
.	O
</s>
<s>
5	B-Application
,	O
is	O
part	O
of	O
the	O
ISO/IEC	O
8859	O
series	O
of	O
ASCII-based	O
standard	O
character	B-General_Concept
encodings	I-General_Concept
,	O
first	O
edition	O
published	O
in	O
1989	O
.	O
</s>
<s>
It	O
is	O
designated	O
ECMA-128	O
by	O
Ecma	O
International	O
and	O
TS	B-Language
5881	O
as	O
a	O
Turkish	O
standard	O
.	O
</s>
<s>
It	O
is	O
informally	O
referred	O
to	O
as	O
Latin-5	O
or	O
Turkish	O
.	O
</s>
<s>
ISO-8859-9	O
is	O
the	O
IANA	O
preferred	O
charset	B-General_Concept
name	O
for	O
this	O
standard	O
when	O
supplemented	O
with	O
the	O
C0	O
and	O
C1	O
control	O
codes	O
from	O
ISO/IEC	O
6429	O
.	O
</s>
<s>
Since	O
2023	O
,	O
less	O
than	O
0.05	O
%	O
of	O
all	O
web	O
pages	O
use	O
ISO-8859-9	O
,	O
while	O
2.1	O
%	O
of	O
web	O
pages	O
located	O
in	O
Turkey	O
declare	O
use	O
of	O
ISO-8859-9	O
.	O
</s>
<s>
However	O
,	O
the	O
WHATWG	B-Language
Encoding	O
Standard	O
,	O
which	O
specifies	O
the	O
character	B-General_Concept
encodings	I-General_Concept
which	O
are	O
permitted	O
in	O
HTML5	B-Application
and	O
which	O
compliant	O
browsers	O
must	O
support	O
,	O
requires	O
that	O
web	O
pages	O
marked	O
as	O
ISO-8859-9	O
be	O
handled	O
as	O
Windows-1254	O
,	O
which	O
differs	O
from	O
ISO-8859-9	O
by	O
using	O
the	O
CR	O
range	O
which	O
ISO-8859-9	O
reserves	O
for	O
C1	O
control	O
codes	O
for	O
additional	O
graphical	O
characters	O
instead	O
(	O
analogous	O
to	O
the	O
relationship	O
between	O
ISO-8859-1	O
and	O
Windows-1252	O
)	O
.	O
</s>
<s>
Microsoft	O
has	O
assigned	O
code	O
page	O
28599	O
a.k.a.	O
</s>
<s>
Windows-28599	O
to	O
ISO-8859-9	O
in	O
Windows	O
.	O
</s>
<s>
IBM	O
has	O
assigned	O
code	B-General_Concept
page	I-General_Concept
920	I-General_Concept
(	O
CCSID	O
920	O
)	O
to	O
ISO-8859-9	O
.	O
</s>
