<s>
M4	B-Operating_System
is	O
a	O
computer	O
game	O
developed	O
by	O
Deadly	O
Games	O
in	O
1992	O
for	O
the	O
Macintosh	B-Device
and	O
in	O
1996	O
for	O
Windows	O
3.x	O
.	O
</s>
<s>
M4	B-Operating_System
,	O
also	O
known	O
by	O
its	O
full	O
length	O
name	O
as	O
M4	B-Operating_System
:	O
Sherman	O
Tank	O
Simulator	O
or	O
its	O
German	O
release	O
as	O
M4	B-Operating_System
Tank	O
Simulator	O
,	O
is	O
a	O
tank	O
simulation	O
where	O
the	O
player	O
is	O
a	O
tank	O
commander	O
for	O
an	O
M4	B-Operating_System
Sherman	O
tank	O
during	O
World	O
War	O
II	O
.	O
</s>
<s>
M4	B-Operating_System
was	O
reviewed	O
in	O
1993	O
in	O
Dragon	O
#193	O
by	O
Hartley	O
,	O
Patricia	O
,	O
and	O
Kirk	O
Lesser	O
in	O
"	O
The	O
Role	O
of	O
Computers	O
"	O
column	O
.	O
</s>
<s>
Markus	O
Dahlberg	O
reviewed	O
M4	B-Operating_System
for	O
Swedish	O
magazine	O
Datormagazin	O
in	O
1994	O
.	O
</s>
