<s>
SOX	B-Operating_System
is	O
a	O
discontinued	O
UNIX	B-Operating_System
clone	I-Operating_System
.	O
</s>
<s>
Certified	O
as	O
UNIX-compatible	O
by	O
X/Open	O
(	O
through	O
UniSoft	B-Operating_System
)	O
in	O
early	O
1989	O
,	O
SOX	B-Operating_System
was	O
one	O
of	O
the	O
first	O
re-implementations	O
of	O
UNIX	B-Application
,	O
fully	O
independent	O
of	O
AT&T	O
,	O
that	O
passed	O
the	O
X/Open	O
verification	O
tests	O
,	O
and	O
the	O
only	O
one	O
ever	O
completed	O
entirely	O
outside	O
the	O
United	O
States	O
.	O
</s>
<s>
SOX	B-Operating_System
was	O
designed	O
to	O
run	O
on	O
COBRA	O
's	O
own	O
minicomputers	B-Architecture
and	O
was	O
the	O
result	O
of	O
the	O
Brazilian	O
Informatics	O
Policy	O
,	O
which	O
aimed	O
to	O
achieve	O
technological	O
independence	O
from	O
the	O
United	O
States	O
.	O
</s>
<s>
Despite	O
being	O
a	O
technical	O
success	O
,	O
SOX	B-Operating_System
came	O
too	O
late	O
,	O
when	O
COBRA	O
had	O
largely	O
lost	O
its	O
support	O
.	O
</s>
<s>
SOX	B-Operating_System
development	O
stopped	O
soon	O
after	O
it	O
was	O
certified	O
,	O
when	O
the	O
government	O
decided	O
to	O
allow	O
use	O
of	O
UNIX	B-Application
System	I-Application
V	O
Release	O
4.0	O
.	O
</s>
