<s>
DNA-OS	B-Operating_System
is	O
a	O
French-made	O
operating	B-Operating_System
system	I-Operating_System
to	O
supersede	O
MutekA	O
,	O
an	O
obsolete	O
operating	B-Operating_System
system	I-Operating_System
,	O
while	O
still	O
providing	O
POSIX	O
thread	O
API	O
.	O
</s>
<s>
As	O
said	O
on	O
the	O
,	O
"	O
It	O
is	O
a	O
kernel-mode	O
lightweight	O
operating	B-Operating_System
system	I-Operating_System
for	O
Multiprocessor	O
System	O
on	O
a	O
Chip	O
.	O
</s>
<s>
DNA-OS	B-Operating_System
is	O
a	O
layered	O
microkernel	B-Operating_System
operating	B-Operating_System
system	I-Operating_System
,	O
written	O
in	O
C99	B-Language
,	O
released	O
under	O
the	O
GNU	O
GPLv3	O
license	O
.	O
</s>
