<s>
RETAS	B-Application
(	O
Revolutionary	O
Engineering	O
Total	O
Animation	O
System	O
)	O
is	O
a	O
2D	O
animation	O
software	O
bundle	O
developed	O
and	O
sold	O
by	O
Celsys	B-Application
that	O
is	O
available	O
for	O
Microsoft	B-Application
Windows	I-Application
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
.	O
</s>
<s>
It	O
handles	O
the	O
entire	O
animation	O
production	O
from	O
digitally	O
drawing	O
or	O
tracing	O
to	O
exporting	O
in	O
Flash	B-Operating_System
and	O
QuickTime	B-Application
,	O
and	O
is	O
considered	O
to	O
be	O
a	O
leader	O
in	O
Japan	O
's	O
anime	O
industry	O
including	O
Toei	O
Animation	O
.	O
</s>
<s>
RETAS	B-Application
was	O
later	O
succeeded	O
by	O
Clip	B-Application
Studio	I-Application
Paint	I-Application
.	O
</s>
<s>
RETAS	B-Application
!	O
</s>
<s>
PRO	O
HD	O
is	O
the	O
most	O
current	O
software	O
being	O
offered	O
to	O
the	O
English-speaking	O
community	O
through	O
Celsys	B-Application
.	O
</s>
<s>
Designed	O
to	O
work	O
with	O
a	O
graphics	B-Device
tablet	I-Device
as	O
an	O
alternative	O
to	O
paper	O
,	O
it	O
is	O
capable	O
of	O
multi-layer	O
editing	O
,	O
onion	O
skinning	O
,	O
and	O
advanced	O
vector	O
editing	O
.	O
</s>
<s>
Some	O
of	O
the	O
most	O
commonly	O
supported	O
formats	O
are	O
Flash	B-Operating_System
,	O
QuickTime	B-Application
,	O
and	O
AVI	O
(	O
Windows	O
Only	O
)	O
.	O
</s>
<s>
On	O
December	O
18	O
,	O
2008	O
,	O
Celsys	B-Application
introduced	O
a	O
new	O
version	O
of	O
RETAS	B-Application
entitled	O
RETAS	B-Application
STUDIO	O
to	O
the	O
Japanese-speaking	O
audience	O
.	O
</s>
<s>
RETAS	B-Application
STUDIO	O
is	O
Celsys	B-Application
's	O
latest	O
and	O
competitively-priced	O
animation	O
software	O
that	O
incorporates	O
the	O
entire	O
RETAS	B-Application
suite	O
(	O
Stylos	O
,	O
TraceMan	O
,	O
PaintMan	O
,	O
and	O
CoreRETAS	O
)	O
into	O
a	O
single	O
package	O
.	O
</s>
