<s>
The	O
W	B-Application
Window	I-Application
System	I-Application
,	O
or	O
simply	O
W	O
,	O
is	O
a	O
discontinued	O
windowing	B-Application
system	I-Application
and	O
precursor	O
,	O
in	O
name	O
and	O
concept	O
,	O
to	O
the	O
modern	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
.	O
</s>
<s>
W	O
was	O
originally	O
developed	O
at	O
Stanford	O
University	O
by	O
Paul	O
Asente	O
and	O
Brian	O
Reid	O
for	O
the	O
V	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
.	O
</s>
<s>
In	O
1983	O
,	O
Paul	O
Asente	O
and	O
Chris	O
Kent	O
ported	O
the	O
system	O
to	O
UNIX	B-Application
on	O
the	O
VS100	O
,	O
giving	O
a	O
copy	O
to	O
those	O
working	O
at	O
MIT	O
's	O
Laboratory	O
for	O
Computer	O
Science	O
.	O
</s>
<s>
In	O
1984	O
,	O
Bob	O
Scheifler	O
of	O
MIT	O
replaced	O
the	O
synchronous	O
protocol	O
of	O
W	O
with	O
an	O
asynchronous	B-Architecture
alternative	O
and	O
named	O
the	O
result	O
X	B-Operating_System
.	O
</s>
<s>
Since	O
this	O
time	O
,	O
the	O
X	B-Operating_System
window	I-Operating_System
system	I-Operating_System
has	O
gone	O
through	O
many	O
fundamental	O
changes	O
and	O
no	O
longer	O
bears	O
any	O
significant	O
resemblance	O
to	O
W	O
.	O
</s>
