<s>
mks_vir	O
(	O
formerly	O
:	O
MkS_Vir	O
)	O
is	O
a	O
Polish	O
antivirus	B-Application
program	I-Application
,	O
created	O
by	O
Marek	O
Sell	O
in	O
1987	O
.	O
</s>
<s>
The	O
first	O
versions	O
for	O
DOS	B-Device
were	O
distributed	O
on	O
floppy	B-Device
disks	I-Device
by	O
Apexim	O
,	O
the	O
company	O
in	O
which	O
Marek	O
Sell	O
worked	O
.	O
</s>
<s>
A	O
website	O
of	O
the	O
program	O
and	O
a	O
BBS	B-Application
were	O
created	O
.	O
</s>
<s>
Versions	O
for	O
Microsoft	B-Application
Windows	I-Application
and	O
Unix	B-Application
were	O
created	O
.	O
</s>
<s>
An	O
online	O
scanner	O
,	O
based	O
on	O
the	O
ActiveX	B-Application
technology	O
,	O
became	O
available	O
on	O
the	O
software	O
website	O
.	O
</s>
<s>
It	O
reactivated	O
the	O
mks_vir	O
product	O
as	O
a	O
free	O
antivirus	B-Application
application	O
.	O
</s>
