<s>
Xmouse	B-Application
is	O
a	O
system	O
of	O
mouse	B-Device
control	O
in	O
computer	O
operating	O
systems	O
used	O
instead	O
of	O
the	O
standard	O
selection	O
behavior	O
.	O
</s>
<s>
The	O
xmouse	B-Application
system	O
automatically	O
selects	O
objects	O
or	O
activates	O
windows	B-Application
after	O
hovering	O
the	O
mouse	B-Device
over	O
the	O
object	O
for	O
a	O
certain	O
period	O
of	O
time	O
.	O
</s>
<s>
Xmouse	B-Application
is	O
a	O
system	O
of	O
mouse	B-Device
control	O
used	O
instead	O
of	O
the	O
standard	O
system	O
of	O
selection	O
on	O
computers	O
(	O
most	O
notably	O
Windows	B-Application
and	O
X11	B-Operating_System
,	O
where	O
it	O
is	O
an	O
option	O
)	O
.	O
</s>
<s>
The	O
behavior	O
is	O
similar	O
to	O
mouse	B-Device
control	O
in	O
X	B-Operating_System
Windows	I-Operating_System
.	O
</s>
<s>
Where	O
normal	O
Windows	B-Application
and	O
X11	B-Operating_System
mouse	B-Device
control	O
uses	O
single-click	O
for	O
selection	O
and	O
double-click	O
to	O
open/edit/etc	O
,	O
the	O
xmouse	B-Application
system	O
automatically	O
selects	O
objects	O
after	O
hovering	O
the	O
mouse	B-Device
over	O
the	O
object	O
for	O
a	O
certain	O
period	O
of	O
time	O
(	O
often	O
one	O
second	O
)	O
.	O
</s>
<s>
On	O
Microsoft	B-Application
Windows	I-Application
,	O
an	O
Xmouse	B-Application
Control	O
Panel	O
applet	O
was	O
available	O
as	O
part	O
of	O
the	O
Windows	B-Application
95	O
PowerToys	B-Application
,	O
used	O
to	O
configure	O
focusing	O
windows	B-Application
in	O
the	O
user	O
interface	O
by	O
hovering	O
.	O
</s>
<s>
On	O
newer	O
Windows	B-Application
versions	O
,	O
the	O
behavior	O
can	O
be	O
configured	O
using	O
Tweak	B-Application
UI	I-Application
or	O
directly	O
from	O
the	O
Windows	B-Protocol
Registry	I-Protocol
.	O
</s>
<s>
The	O
setting	O
is	O
also	O
built	O
into	O
Windows	B-Application
Vista	I-Application
and	O
Windows	B-Device
7	I-Device
in	O
the	O
Ease	O
of	O
Access	O
Center	O
as	O
"	O
Activate	O
a	O
window	O
by	O
hovering	O
over	O
it	O
with	O
the	O
mouse	B-Device
"	O
,	O
however	O
preventing	O
the	O
activated	O
window	O
from	O
moving	O
to	O
foreground	O
can	O
be	O
done	O
by	O
using	O
the	O
relevant	O
SystemParametersInfo	O
system	O
calls	O
in	O
Windows	B-Application
 '	O
USER	O
component	O
,	O
or	O
by	O
configuring	O
the	O
registry	B-Protocol
.	O
</s>
<s>
Proponents	O
of	O
the	O
xmouse	B-Application
system	O
claim	O
it	O
has	O
many	O
advantages	O
over	O
the	O
regular	O
system	O
of	O
selection	O
.	O
</s>
<s>
Firstly	O
,	O
if	O
the	O
activated	O
window	O
is	O
also	O
configured	O
to	O
be	O
drawn	O
into	O
foreground	O
there	O
must	O
be	O
a	O
minimum	O
time	O
for	O
the	O
cursor	O
to	O
hover	O
over	O
a	O
window	O
before	O
it	O
is	O
selected	O
,	O
or	O
else	O
all	O
touched	O
windows	B-Application
would	O
be	O
immediately	O
in	O
foreground	O
and	O
cover	O
other	O
windows	B-Application
.	O
</s>
<s>
This	O
lag	O
time	O
reduces	O
the	O
maximum	O
speed	O
that	O
xmouse	B-Application
can	O
be	O
used	O
at	O
,	O
and	O
could	O
lead	O
to	O
annoying	O
pauses	O
.	O
</s>
<s>
Secondly	O
,	O
as	O
it	O
is	O
rarely	O
used	O
in	O
the	O
world	O
,	O
people	O
who	O
get	O
used	O
to	O
the	O
xmouse	B-Application
system	O
might	O
find	O
it	O
hard	O
to	O
adjust	O
to	O
using	O
other	O
computers	O
,	O
and	O
vice	O
versa	O
.	O
</s>
