<s>
A	O
mirror	B-Application
driver	I-Application
is	O
a	O
display	B-Application
driver	I-Application
for	O
a	O
virtual	O
device	O
that	O
mirrors	O
the	O
drawing	O
operations	O
of	O
one	O
or	O
more	O
additional	O
physical	O
display	O
devices	O
.	O
</s>
<s>
Windows	O
 '	O
mirror	B-Application
drivers	I-Application
were	O
first	O
introduced	O
in	O
1998	O
with	O
the	O
Windows	O
2000	O
display	B-Application
driver	I-Application
model	O
,	O
which	O
was	O
renamed	O
later	O
to	O
XPDM	O
.	O
</s>
<s>
In	O
2006	O
,	O
for	O
Windows	O
Vista	O
,	O
Microsoft	O
introduced	O
a	O
new	O
Windows	B-Device
Display	I-Device
Driver	I-Device
Model	I-Device
.	O
</s>
<s>
As	O
a	O
consequence	O
,	O
when	O
a	O
mirror	B-Application
driver	I-Application
designed	O
for	O
the	O
older	O
model	O
was	O
active	O
,	O
such	O
as	O
when	O
Windows	B-Protocol
Remote	I-Protocol
Assistance	I-Protocol
or	O
Windows	B-Protocol
Live	I-Protocol
Mesh	I-Protocol
were	O
in	O
use	O
,	O
Vista	O
disabled	O
Desktop	O
Window	O
Manager	O
and	O
Windows	O
Aero	O
.	O
</s>
<s>
Beginning	O
with	O
the	O
DDK	B-Application
targeted	O
at	O
Windows	O
8	O
,	O
mirror	B-Application
drivers	I-Application
have	O
to	O
fulfill	O
very	O
exacting	O
specifications	O
-	O
they	O
must	O
support	O
a	O
specific	O
set	O
of	O
functions	O
,	O
and	O
no	O
more	O
than	O
those	O
.	O
</s>
<s>
Windows	O
installations	O
come	O
with	O
two	O
mirror	B-Application
drivers	I-Application
preinstalled	O
-	O
"	O
mnmdd	O
"	O
used	O
by	O
NetMeeting	O
,	O
and	O
"	O
RDPDD	O
Chained	O
DD	O
"	O
used	O
for	O
Terminal	O
Server/RemoteDesktop	O
services	O
.	O
</s>
<s>
Third-party	O
mirror	B-Application
drivers	I-Application
are	O
included	O
with	O
screen	O
readers	O
such	O
as	O
JAWS	B-Application
,	O
Window-Eyes	B-Device
and	O
FreedomBox	O
;	O
the	O
monitoring	O
software	O
LanSchool	B-Application
;	O
and	O
remote	B-Protocol
desktop	I-Protocol
software	I-Protocol
such	O
as	O
Timbuktu	O
,	O
LogMeIn	B-Application
,	O
UltraVNC	B-Language
,	O
TightVNC	B-Language
,	O
Radmin	O
and	O
RemotePC	O
.	O
</s>
