<s>
The	O
Series	B-Application
90	I-Application
(	O
formerly	O
Hildon	B-Language
)	O
is	O
a	O
platform	B-Device
for	O
mobile	O
phones	O
that	O
use	O
Symbian	B-Operating_System
OS	I-Operating_System
.	O
</s>
<s>
It	O
was	O
developed	O
by	O
Nokia	O
in	O
collaboration	O
with	O
Psion	B-Application
.	O
</s>
<s>
It	O
was	O
released	O
in	O
2003	O
and	O
was	O
going	O
to	O
be	O
the	O
platform	B-Device
for	O
the	O
Nokia	B-Language
7700	I-Language
which	O
was	O
cancelled	O
,	O
but	O
did	O
eventually	O
make	O
it	O
to	O
market	O
with	O
the	O
Nokia	B-Language
7710	I-Language
.	O
</s>
<s>
Nokia	O
discontinued	O
Series	B-Application
90	I-Application
as	O
a	O
platform	B-Device
,	O
but	O
merged	O
its	O
technology	O
into	O
S60	B-Language
.	O
</s>
<s>
Although	O
only	O
one	O
production	O
Series	B-Application
90	I-Application
device	O
was	O
made	O
,	O
a	O
form	O
of	O
the	O
GUI	B-Application
continued	O
on	O
as	O
Nokia	O
's	O
Hildon	B-Language
user	O
interface	O
in	O
the	O
Maemo	B-Operating_System
shipped	O
with	O
Nokia	B-Device
Internet	I-Device
Tablets	I-Device
.	O
</s>
<s>
Series	B-Application
90	I-Application
is	O
completely	O
incompatible	O
with	O
Series	B-Language
60	I-Language
(	O
S60	B-Language
)	O
and	O
UIQ	B-Language
,	O
the	O
most	O
popular	O
platforms	B-Device
for	O
Symbian	B-Operating_System
smartphones	O
.	O
</s>
<s>
However	O
,	O
some	O
applications	O
from	O
Nokia	B-Application
Series	I-Application
80	I-Application
Communicator	O
devices	O
–	O
such	O
as	O
the	O
Nokia	B-Language
9300	I-Language
–	O
will	O
function	O
under	O
Series	B-Application
90	I-Application
.	O
</s>
<s>
Essentially	O
,	O
Series	B-Application
90	I-Application
is	O
a	O
development	O
of	O
the	O
Psion	B-Application
Eikon	O
GUI	B-Application
as	O
used	O
on	O
the	O
Series	B-Application
5	I-Application
,	O
Series	O
5mx	O
,	O
Revo	B-Application
,	O
netPad	B-Device
,	O
Series	B-Application
7	I-Application
and	O
netBook	B-Application
machines	O
.	O
</s>
<s>
The	O
Nokia	B-Language
7700	I-Language
,	O
which	O
was	O
never	O
released	O
,	O
had	O
only	O
an	O
on-screen	O
keyboard	O
for	O
text	O
input	O
;	O
the	O
7710	B-Language
added	O
basic	O
handwriting	O
recognition	O
.	O
</s>
