<s>
Ferret	O
is	O
an	O
interactive	O
computer	B-Application
visualization	I-Application
and	O
analysis	O
environment	O
designed	O
to	O
meet	O
the	O
needs	O
of	O
oceanographers	O
and	O
meteorologists	O
analyzing	O
large	O
and	O
complex	O
gridded	O
data	O
sets	O
.	O
</s>
<s>
It	O
runs	O
on	O
most	O
Unix	B-Application
and	O
Linux	B-Application
systems	O
using	O
X	B-Operating_System
Window	I-Operating_System
for	O
display	O
,	O
and	O
on	O
Windows	B-Application
XP/NT/9x	O
.	O
</s>
