<s>
Hildon	B-Language
is	O
an	O
application	B-Application
framework	I-Application
originally	O
developed	O
for	O
mobile	O
devices	O
(	O
PDAs	B-Application
,	O
mobile	O
phones	O
,	O
etc	O
.	O
)	O
</s>
<s>
running	O
the	O
Linux	B-Application
operating	I-Application
system	I-Application
as	O
well	O
as	O
the	O
Symbian	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
.	O
</s>
<s>
The	O
Symbian	B-Operating_System
variant	O
of	O
Hildon	B-Language
was	O
discontinued	O
with	O
the	O
cancellation	O
of	O
Series	B-Application
90	I-Application
.	O
</s>
<s>
It	O
was	O
developed	O
by	O
Nokia	O
for	O
the	O
Maemo	B-Operating_System
operating	B-General_Concept
system	I-General_Concept
and	O
is	O
now	O
a	O
part	O
of	O
GNOME	B-Application
.	O
</s>
<s>
It	O
is	O
primarily	O
a	O
set	O
of	O
GTK	B-Application
extensions	O
that	O
provide	O
mobile-device	O
–	O
oriented	O
functionality	O
,	O
but	O
also	O
provides	O
a	O
desktop	O
environment	O
that	O
includes	O
a	O
task	O
navigator	O
for	O
opening	O
and	O
switching	O
between	O
programs	O
,	O
a	O
control	O
panel	O
for	O
user	O
settings	O
,	O
and	O
status	O
bar	O
,	O
task	O
bar	O
and	O
home	O
applets	O
.	O
</s>
<s>
It	O
is	O
standard	O
on	O
the	O
Maemo	B-Operating_System
platform	I-Operating_System
used	O
by	O
the	O
Nokia	B-Device
Internet	I-Device
Tablets	I-Device
and	O
the	O
Nokia	B-Application
N900	I-Application
smartphone	B-Application
.	O
</s>
<s>
Hildon	B-Language
has	O
also	O
been	O
selected	O
as	O
the	O
framework	O
for	O
Ubuntu	O
Mobile	O
and	O
Embedded	O
Edition	O
.	O
</s>
<s>
Hildon	B-Language
was	O
an	O
early	O
instance	O
of	O
a	O
software	B-Device
platform	I-Device
for	O
generic	O
computing	O
in	O
a	O
tablet	O
device	O
intended	O
for	O
internet	O
consumption	O
.	O
</s>
<s>
But	O
Nokia	O
did	O
n't	O
commit	O
to	O
it	O
as	O
their	O
only	O
platform	O
for	O
their	O
future	O
mobile	O
devices	O
and	O
the	O
project	O
competed	O
against	O
other	O
in-house	O
platforms	B-Device
.	O
</s>
<s>
The	O
strategic	O
advantage	O
of	O
a	O
modern	O
platform	O
was	O
not	O
exploited	O
,	O
being	O
displaced	O
by	O
the	O
Series	B-Language
60	I-Language
,	O
though	O
its	O
development	O
is	O
continued	O
by	O
the	O
Maemo	B-Operating_System
Leste	O
project	O
.	O
</s>
<s>
The	O
Hildon	B-Language
framework	O
includes	O
components	O
that	O
effectively	O
provide	O
a	O
desktop	O
environment	O
.	O
</s>
<s>
Hildon	B-Language
Application	O
Manager	O
is	O
the	O
Hildon	B-Language
graphical	O
package	O
manager	O
,	O
it	O
uses	O
the	O
Debian	O
package	O
management	O
tools	O
APT	B-Application
(	O
Advanced	B-Application
Packaging	I-Application
Tool	I-Application
and	O
dpkg	B-Language
)	O
and	O
provides	O
a	O
graphical	O
interface	O
for	O
installing	O
,	O
updating	O
and	O
removing	O
packages	O
.	O
</s>
<s>
With	O
the	O
Diablo	O
release	O
of	O
Maemo	B-Operating_System
,	O
Hildon	B-Language
Application	O
Manager	O
now	O
supports	O
"	O
Seamless	O
Software	O
Update	O
"	O
(	O
SSU	O
)	O
,	O
which	O
implements	O
a	O
variety	O
of	O
features	O
to	O
allow	O
system	O
upgrades	O
to	O
be	O
easily	O
performed	O
through	O
it	O
.	O
</s>
<s>
Hildon	B-Language
Control	O
Panel	O
is	O
the	O
user	O
settings	O
interface	O
for	O
Hildon	B-Language
.	O
</s>
<s>
Hildon	B-Language
Desktop	O
is	O
the	O
primary	O
UI	O
component	O
of	O
Hildon	B-Language
,	O
so	O
makes	O
up	O
the	O
bulk	O
of	O
what	O
a	O
user	O
will	O
see	O
as	O
"	O
Hildon	B-Language
"	O
.	O
</s>
<s>
The	O
Hildon	B-Language
library	O
,	O
originally	O
developed	O
by	O
Nokia	O
but	O
since	O
Maemo	B-Operating_System
5	O
,	O
developed	O
by	O
Igalia	O
and	O
Lanedo	O
(	O
who	O
developed	O
,	O
the	O
Maemo	B-Operating_System
version	O
of	O
GTK+	B-Application
)	O
.	O
</s>
<s>
It	O
is	O
a	O
set	O
of	O
mobile	O
specific	O
GTK+	B-Application
widgets	O
for	O
applications	O
in	O
Maemo	B-Operating_System
.	O
</s>
<s>
Up	O
to	O
Maemo	B-Operating_System
4	O
,	O
these	O
widgets	O
were	O
designed	O
for	O
stylus	O
usage	O
.	O
</s>
<s>
However	O
,	O
in	O
Maemo	B-Operating_System
5	O
,	O
most	O
widgets	O
were	O
deprecated	O
and	O
new	O
widgets	O
for	O
direct	O
finger	O
manipulation	O
were	O
introduced	O
,	O
including	O
a	O
kinetic	O
panning	O
container	O
.	O
</s>
