<s>
SharedX	B-Application
is	O
a	O
set	O
of	O
extensions	O
to	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
that	O
was	O
developed	O
at	O
HP	O
in	O
the	O
mid	O
to	O
late	O
1980s	O
.	O
</s>
<s>
It	O
enables	O
X	B-Operating_System
servers	I-Operating_System
to	O
"	O
share	O
"	O
individual	O
X	B-Operating_System
windows	I-Operating_System
or	O
an	O
entire	O
desktop	O
,	O
thus	O
allowing	O
users	O
at	O
multiple	O
workstations	B-Device
to	O
use	O
standard	O
applications	O
to	O
collaborate	O
in	O
real-time	B-General_Concept
in	O
an	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
network	O
environment	O
,	O
similar	O
to	O
desktop	B-Device
sharing	I-Device
,	O
but	O
for	O
only	O
a	O
single	O
window	O
.	O
</s>
<s>
A	O
decade	O
later	O
,	O
this	O
capability	O
would	O
be	O
termed	O
"	O
desktop	B-Device
sharing	I-Device
"	O
,	O
with	O
VNC	B-Protocol
being	O
a	O
major	O
player	O
.	O
</s>
<s>
One	O
difference	O
between	O
VNC	B-Protocol
and	O
SharedX	B-Application
is	O
that	O
SharedX	B-Application
allows	O
fine-grained	O
sharing	O
of	O
any	O
X	B-Operating_System
window	I-Operating_System
or	O
group	O
of	O
X	B-Operating_System
windows	I-Operating_System
among	O
any	O
number	O
of	O
users	O
,	O
while	O
VNC	B-Protocol
only	O
allows	O
sharing	O
of	O
the	O
entire	O
desktop	O
.	O
</s>
<s>
SharedX	B-Application
was	O
conceived	O
by	O
Philip	O
Gust	O
at	O
HP	O
Labs	O
,	O
where	O
he	O
developed	O
several	O
implementations	O
between	O
1986	O
and	O
1987	O
.	O
</s>
<s>
It	O
was	O
first	O
presented	O
and	O
demonstrated	O
at	O
the	O
2nd	O
Annual	O
X	B-Operating_System
Technical	O
Conference	O
.	O
</s>
<s>
A	O
proxy	O
server	O
version	O
based	O
on	O
X11	B-Operating_System
protocol	O
extensions	O
was	O
subsequently	O
developed	O
by	O
Philip	O
Gust	O
and	O
his	O
team	O
at	O
HP	O
Labs	O
,	O
including	O
Dan	O
Garfinkel	O
,	O
Steve	O
Lowder	O
,	O
and	O
Mike	O
Lemon	O
.	O
</s>
<s>
This	O
version	O
was	O
presented	O
and	O
demonstrated	O
at	O
the	O
3rd	O
Annual	O
X	B-Operating_System
Technical	O
Conference	O
.	O
</s>
<s>
In	O
addition	O
to	O
window	O
sharing	O
,	O
this	O
version	O
of	O
SharedX	B-Application
also	O
provided	O
extensible	O
"	O
floor	O
control	O
"	O
policies	O
to	O
mediate	O
multi-user	O
interaction	O
,	O
and	O
meeting	O
tools	O
such	O
as	O
virtual	O
meeting	O
rooms	O
,	O
avatars	O
,	O
"	O
telepointers	O
"	O
and	O
voting	O
.	O
</s>
<s>
The	O
SharedX	B-Application
technology	O
subsequently	O
transferred	O
to	O
a	O
product	O
division	O
,	O
where	O
it	O
was	O
incorporated	O
into	O
HP	O
's	O
X	B-Operating_System
Window	I-Operating_System
server	O
that	O
is	O
supplied	O
in	O
versions	O
of	O
HP-UX	B-Application
.	O
</s>
<s>
A	O
number	O
of	O
subsequent	O
research	O
projects	O
and	O
publications	O
have	O
built	O
on	O
or	O
cited	O
SharedX	B-Application
.	O
</s>
