<s>
In	O
computing	O
,	O
LBX	B-Device
,	O
or	O
Low	B-Device
Bandwidth	I-Device
X	I-Device
,	O
is	O
a	O
protocol	O
to	O
use	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
over	O
network	B-Architecture
links	O
with	O
low	O
bandwidth	O
and	O
high	O
latency	O
.	O
</s>
<s>
It	O
was	O
introduced	O
in	O
X11R6.3	O
(	O
"	O
Broadway	O
"	O
)	O
in	O
1996	O
,	O
but	O
never	O
achieved	O
wide	O
use	O
.	O
</s>
<s>
It	O
was	O
disabled	O
by	O
default	O
as	O
of	O
X.Org	B-Operating_System
Server	I-Operating_System
7.1	O
,	O
and	O
was	O
removed	O
for	O
version	O
7.2	O
.	O
</s>
<s>
X	B-Operating_System
was	O
originally	O
implemented	O
for	O
use	O
with	O
the	O
server	B-Application
and	O
client	B-Protocol
on	O
the	O
same	O
machine	O
or	O
the	O
same	O
local	B-General_Concept
area	I-General_Concept
network	I-General_Concept
.	O
</s>
<s>
By	O
1996	O
,	O
the	O
Internet	O
was	O
becoming	O
popular	O
,	O
and	O
X	B-Operating_System
's	O
performance	O
over	O
narrow	O
,	O
slow	O
links	O
was	O
problematic	O
.	O
</s>
<s>
LBX	B-Device
ran	O
as	O
a	O
proxy	B-Application
server	I-Application
(	O
)	O
.	O
</s>
<s>
It	O
cached	O
commonly	O
used	O
information	O
connection	O
setup	O
,	O
large	O
window	O
properties	O
,	O
font	O
metrics	O
,	O
keymaps	O
and	O
so	O
on	O
and	O
compressed	B-General_Concept
data	I-General_Concept
transmission	O
over	O
the	O
network	B-Architecture
link	O
.	O
</s>
<s>
LBX	B-Device
was	O
never	O
widely	O
deployed	O
as	O
it	O
did	O
not	O
offer	O
significant	O
speed	O
improvements	O
.	O
</s>
<s>
The	O
slow	O
links	O
it	O
was	O
introduced	O
to	O
help	O
were	O
typically	O
insecure	O
,	O
and	O
RFB	B-Protocol
(	O
VNC	B-Protocol
)	O
over	O
a	O
secure	B-Protocol
shell	I-Protocol
connection	O
which	O
includes	O
compression	O
proved	O
faster	O
than	O
LBX	B-Device
,	O
and	O
also	O
provided	O
session	O
resumption	O
.	O
</s>
<s>
Finally	O
,	O
it	O
was	O
shown	O
that	O
greater	O
speed	O
improvements	O
to	O
X	B-Operating_System
could	O
be	O
obtained	O
for	O
all	O
networked	O
environments	O
with	O
replacement	O
of	O
X	B-Operating_System
's	O
antiquated	O
font	O
system	O
as	O
part	O
of	O
the	O
new	O
composited	O
graphics	O
system	O
,	O
along	O
with	O
care	O
and	O
attention	O
to	O
application	O
and	O
widget	B-Library
toolkit	I-Library
design	O
,	O
particularly	O
care	O
to	O
avoid	O
network	B-Architecture
round	O
trips	O
and	O
hence	O
latency	O
.	O
</s>
