<s>
GNOME	B-Language
Panel	I-Language
is	O
a	O
highly	O
configurable	O
taskbar	O
for	O
GNOME	B-Application
.	O
</s>
<s>
It	O
formed	O
a	O
core	O
part	O
of	O
the	O
desktop	O
in	O
GNOME	B-Language
1	I-Language
and	O
GNOME	B-Application
2	O
.	O
</s>
<s>
It	O
has	O
been	O
replaced	O
in	O
GNOME	B-Application
3	O
by	O
default	O
with	O
GNOME	B-Language
Shell	I-Language
,	O
which	O
only	O
works	O
with	O
the	O
Mutter	B-Language
window	O
manager	O
.	O
</s>
<s>
There	O
are	O
many	O
applets	O
for	O
GNOME	B-Language
Panel	I-Language
available	O
in	O
one	O
package	O
called	O
gnome-applets	O
while	O
some	O
applets	O
included	O
with	O
GNOME	B-Language
Panel	I-Language
as	O
built-in	O
,	O
like	O
a	O
traditional	O
start	O
menu	O
.	O
</s>
<s>
GNOME	B-Language
Panel	I-Language
served	O
as	O
Fallback	O
Mode	O
until	O
GNOME	B-Application
3.8	O
when	O
Mutter	B-Language
could	O
not	O
be	O
executed	O
,	O
then	O
it	O
was	O
replaced	O
with	O
a	O
suite	O
of	O
officially	O
supported	O
GNOME	B-Language
Shell	I-Language
extensions	O
named	O
GNOME	B-Application
Classic	O
.	O
</s>
<s>
Now	O
it	O
is	O
part	O
of	O
GNOME	B-Application
Flashback	O
,	O
an	O
official	O
session	O
for	O
GNOME	B-Application
3	O
which	O
provides	O
a	O
user	O
experience	O
similar	O
to	O
GNOME	B-Application
2	O
.	O
</s>
<s>
In	O
GNOME	B-Application
3	O
,	O
customizing	O
GNOME	B-Language
Panel	I-Language
is	O
done	O
by	O
pressing	O
the	O
key	O
while	O
right-clicking	O
on	O
the	O
panel	O
.	O
</s>
<s>
By	O
default	O
,	O
GNOME	B-Application
Flashback	O
contains	O
two	O
panels	O
(	O
one	O
on	O
the	O
top	O
,	O
and	O
one	O
to	O
its	O
opposite	O
on	O
the	O
bottom	O
)	O
spanning	O
the	O
width	O
of	O
the	O
screen	O
.	O
</s>
<s>
The	O
top	O
panel	O
usually	O
contains	O
navigation	O
menus	O
labeled	O
"	O
Applications	O
"	O
and	O
"	O
Places	O
"	O
in	O
that	O
order	O
,	O
as	O
the	O
"	O
System	O
"	O
menu	O
from	O
GNOME	B-Application
2.x	O
has	O
been	O
replaced	O
by	O
a	O
control	O
panel	O
in	O
GNOME	B-Application
3.x	O
.	O
</s>
<s>
A	O
user	O
menu	O
placed	O
on	O
the	O
opposite	O
side	O
of	O
the	O
screen	O
,	O
which	O
has	O
been	O
available	O
since	O
GNOME	B-Application
2.14	O
but	O
has	O
become	O
more	O
prominent	O
in	O
GNOME	B-Application
3.x	O
,	O
holds	O
access	O
to	O
account	O
and	O
system	O
settings	O
as	O
well	O
as	O
options	O
to	O
log	O
out	O
,	O
switch	O
user	O
,	O
and	O
shut	O
down	O
the	O
computer	O
.	O
</s>
<s>
Users	O
can	O
populate	O
these	O
panels	O
with	O
other	O
completely	O
customizable	O
menus	O
and	O
buttons	O
,	O
including	O
new	O
menus	O
,	O
search	O
boxes	O
,	O
and	O
icons	O
,	O
with	O
the	O
icons	O
in	O
particular	O
(	O
called	O
launchers	O
)	O
performing	O
functions	O
similar	O
to	O
the	O
quick-launch	O
feature	O
found	O
in	O
the	O
Microsoft	B-Device
Windows	I-Device
98	I-Device
–	O
Vista	B-Application
taskbar	O
.	O
</s>
<s>
GNOME	B-Application
2.x	O
accomplishes	O
this	O
via	O
right-clicking	O
on	O
an	O
applet	O
and	O
selecting	O
options	O
from	O
a	O
menu	O
;	O
in	O
GNOME	B-Application
3.x	O
,	O
one	O
must	O
press	O
the	O
key	O
while	O
right-clicking	O
to	O
attain	O
the	O
same	O
functionality	O
.	O
</s>
<s>
For	O
example	O
,	O
a	O
migrating	O
Microsoft	O
Windows	O
user	O
might	O
move	O
the	O
menus	O
usually	O
positioned	O
in	O
the	O
top	O
panel	O
into	O
a	O
'	O
start	O
 '	O
menu	O
on	O
the	O
bottom	O
panel	O
as	O
well	O
as	O
moving	O
the	O
notification	O
area	O
into	O
the	O
place	O
normally	O
positioned	O
by	O
the	O
Windows	O
notification	O
area	O
,	O
then	O
remove	O
the	O
top	O
panel	O
altogether	O
,	O
to	O
interact	O
with	O
GNOME	B-Language
Panel	I-Language
similarly	O
to	O
the	O
Windows	O
taskbar	O
.	O
</s>
<s>
The	O
version	O
of	O
GNOME	B-Language
Panel	I-Language
available	O
in	O
the	O
repository	O
for	O
Ubuntu	O
12.04	O
offers	O
a	O
modified	O
version	O
of	O
Fallback	O
Mode	O
with	O
the	O
addition	O
of	O
a	O
custom	O
theme	O
and	O
ports	O
of	O
Ubuntu	O
's	O
own	O
Indicators	O
from	O
their	O
old	O
GNOME	B-Application
2.x	O
desktop	O
.	O
</s>
<s>
Trisquel	B-Application
uses	O
Fallback	O
Mode	O
(	O
Flashback	O
)	O
for	O
its	O
main	O
desktop	O
,	O
because	O
GNOME	B-Language
Shell	I-Language
requires	O
3D	O
acceleration	O
as	O
it	O
relies	O
on	O
graphics	O
composition	O
,	O
while	O
some	O
free	O
software	O
drivers	O
do	O
not	O
support	O
3D	O
acceleration	O
,	O
among	O
other	O
reasons	O
like	O
more	O
usability	O
and	O
more	O
stability	O
.	O
</s>
