<s>
Firefox	B-Operating_System
OS	I-Operating_System
is	O
an	O
operating	B-General_Concept
system	I-General_Concept
for	O
use	O
on	O
certain	O
specific	O
mobile	B-Application
devices	I-Application
.	O
</s>
<s>
This	O
page	O
lists	O
and	O
compares	O
hardware	O
devices	O
that	O
are	O
supplied	O
with	O
a	O
Firefox	B-Operating_System
OS	I-Operating_System
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
