<s>
Web	O
Accessibility	O
Initiative	O
–	O
Accessible	B-General_Concept
Rich	I-General_Concept
Internet	I-General_Concept
Applications	I-General_Concept
(	O
WAI-ARIA	B-General_Concept
)	O
is	O
a	O
technical	O
specification	O
published	O
by	O
the	O
World	O
Wide	O
Web	O
Consortium	O
(	O
W3C	O
)	O
that	O
specifies	O
how	O
to	O
increase	O
the	O
accessibility	O
of	O
web	O
pages	O
,	O
in	O
particular	O
,	O
dynamic	O
content	O
,	O
and	O
user	B-Application
interface	I-Application
components	O
developed	O
with	O
Ajax	B-General_Concept
,	O
HTML	B-Language
,	O
JavaScript	B-Language
,	O
and	O
related	O
technologies	O
.	O
</s>
<s>
In	O
the	O
15	O
September	O
2008	O
working	O
draft	O
,	O
SVG	B-Application
1.2	O
Tiny	O
added	O
support	O
for	O
WAI-ARIA	B-General_Concept
.	O
</s>
<s>
On	O
20	O
March	O
2014	O
,	O
WAI-ARIA	B-General_Concept
1.0	O
became	O
a	O
completed	O
W3C	O
Recommendation	O
.	O
</s>
<s>
Web	O
developers	O
increasingly	O
use	O
client-side	B-Operating_System
scripts	O
to	O
create	O
user	B-Application
interface	I-Application
controls	O
that	O
cannot	O
be	O
created	O
with	O
HTML	B-Language
alone	O
.	O
</s>
<s>
They	O
also	O
use	O
client-side	B-Operating_System
scripts	O
to	O
update	O
sections	O
of	O
a	O
page	O
without	O
requesting	O
a	O
completely	O
new	O
page	O
from	O
a	O
web	B-Application
server	I-Application
.	O
</s>
<s>
Such	O
techniques	O
on	O
websites	O
are	O
called	O
rich	B-Application
Internet	I-Application
applications	I-Application
.	O
</s>
<s>
These	O
user	B-Application
interface	I-Application
controls	O
and	O
content	O
updates	O
are	O
often	O
not	O
accessible	O
to	O
users	O
with	O
disabilities	O
,	O
especially	O
screen	O
reader	O
users	O
and	O
users	O
who	O
cannot	O
use	O
a	O
mouse	B-Device
or	O
other	O
pointing	B-Device
device	I-Device
.	O
</s>
<s>
WAI-ARIA	B-General_Concept
allows	O
web	O
pages	O
(	O
or	O
portions	O
of	O
pages	O
)	O
to	O
declare	O
themselves	O
as	O
applications	B-Application
rather	O
than	O
as	O
static	O
documents	O
,	O
by	O
adding	O
role	O
,	O
property	O
,	O
and	O
state	O
information	O
to	O
dynamic	O
web	B-Application
applications	I-Application
.	O
</s>
<s>
ARIA	O
is	O
intended	O
for	O
use	O
by	O
developers	O
of	O
web	B-Application
applications	I-Application
,	O
web	B-Application
browsers	I-Application
,	O
assistive	O
technologies	O
,	O
and	O
accessibility	O
evaluation	O
tools	O
.	O
</s>
<s>
WAI-ARIA	B-General_Concept
describes	O
how	O
to	O
add	O
semantics	B-Application
and	O
other	O
metadata	O
to	O
HTML	B-Language
content	O
in	O
order	O
to	O
make	O
user	B-Application
interface	I-Application
controls	O
and	O
dynamic	O
content	O
more	O
accessible	O
.	O
</s>
<s>
For	O
example	O
,	O
with	O
WAI-ARIA	B-General_Concept
it	O
is	O
possible	O
to	O
identify	O
a	O
list	O
of	O
links	O
as	O
a	O
navigation	O
menu	O
and	O
to	O
state	O
whether	O
it	O
is	O
expanded	O
or	O
collapsed	O
.	O
</s>
<s>
Although	O
originally	O
developed	O
to	O
address	O
accessibility	O
issues	O
in	O
HTML	B-Language
,	O
the	O
use	O
of	O
WAI-ARIA	B-General_Concept
is	O
not	O
limited	O
to	O
HTML	B-Language
:	O
in	O
principle	O
,	O
it	O
can	O
also	O
be	O
used	O
in	O
other	O
markup	O
languages	O
such	O
as	O
Scalable	B-Application
Vector	I-Application
Graphics	I-Application
(	O
SVG	B-Application
)	O
.	O
</s>
<s>
The	O
Web	O
Accessibility	O
Initiative	O
has	O
published	O
an	O
overview	O
of	O
WAI-ARIA	B-General_Concept
that	O
introduces	O
the	O
subject	O
and	O
guides	O
readers	O
to	O
the	O
WAI-ARIA	B-General_Concept
Suite	O
documents	O
:	O
</s>
<s>
This	O
is	O
primarily	O
aimed	O
at	O
developers	O
of	O
Web	B-Application
browsers	I-Application
,	O
assistive	O
technologies	O
,	O
and	O
other	O
user	B-Protocol
agents	I-Protocol
,	O
in	O
addition	O
to	O
developers	O
of	O
other	O
technical	O
specifications	O
,	O
and	O
developers	O
of	O
accessibility	O
evaluation	O
tools	O
.	O
</s>
<s>
The	O
WAI-ARIA	B-General_Concept
has	O
been	O
marked	O
as	O
completed	O
on	O
20	O
March	O
2014	O
and	O
is	O
therefore	O
a	O
W3C	O
recommendation	O
.	O
</s>
<s>
This	O
is	O
a	O
technical	O
introduction	O
to	O
WAI-ARIA	B-General_Concept
.	O
</s>
<s>
It	O
describes	O
the	O
problems	O
WAI-ARIA	B-General_Concept
tries	O
to	O
address	O
,	O
the	O
underlying	O
concepts	O
,	O
the	O
technical	O
approach	O
and	O
business	O
reasons	O
for	O
adopting	O
WAI-ARIA	B-General_Concept
.	O
</s>
<s>
This	O
document	O
describes	O
best	O
practices	O
for	O
delivering	O
rich	B-Application
Internet	I-Application
applications	I-Application
with	O
WAI-ARIA	B-General_Concept
:	O
it	O
discusses	O
subjects	O
such	O
as	O
general	O
steps	O
for	O
building	O
accessible	O
widgets	O
,	O
keyboard	O
navigation	O
,	O
relationships	O
,	O
form	B-General_Concept
properties	O
,	O
drag-and-drop	O
support	O
,	O
alert	O
and	O
dialog	O
boxes	O
,	O
reusable	O
component	O
libraries	O
,	O
and	O
testing	O
.	O
</s>
