<s>
Links	O
is	O
a	O
free	B-Application
software	I-Application
text	B-Protocol
and	O
graphical	B-Application
web	B-Application
browser	I-Application
with	O
a	O
pull-down	O
menu	O
system	O
.	O
</s>
<s>
It	O
renders	O
complex	O
pages	O
,	O
has	O
partial	O
HTML	B-Language
4.0	I-Language
support	O
(	O
including	O
tables	O
and	O
frames	B-General_Concept
and	O
support	O
for	O
multiple	O
character	O
sets	O
such	O
as	O
UTF-8	O
)	O
,	O
supports	O
color	O
and	O
monochrome	O
terminals	O
,	O
and	O
allows	O
horizontal	O
scrolling	O
.	O
</s>
<s>
It	O
is	O
intended	O
for	O
users	O
who	O
want	O
to	O
retain	O
many	O
typical	O
elements	O
of	O
graphical	B-Application
user	I-Application
interfaces	I-Application
(	O
pop-up	O
windows	O
,	O
menus	O
etc	O
.	O
)	O
</s>
<s>
in	O
a	O
text-only	O
environment	O
.	O
</s>
<s>
His	O
group	O
Twibright	O
Labs	O
later	O
developed	O
version	O
2	O
of	O
the	O
Links	O
browser	B-Application
,	O
which	O
displays	O
graphics	O
,	O
and	O
renders	O
fonts	O
in	O
different	O
sizes	O
(	O
with	O
spatial	B-Algorithm
anti-aliasing	I-Algorithm
)	O
,	O
but	O
no	O
longer	O
supports	O
JavaScript	B-Language
(	O
it	O
used	O
to	O
,	O
up	O
to	O
version	O
2.1pre28	O
)	O
.	O
</s>
<s>
The	O
resulting	O
browser	B-Application
is	O
very	O
fast	O
,	O
but	O
does	O
not	O
display	O
many	O
pages	O
as	O
intended	O
.	O
</s>
<s>
The	O
graphical	B-Application
mode	O
works	O
even	O
on	O
Unix	B-Application
systems	I-Application
without	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
or	O
any	O
other	O
window	O
environment	O
,	O
using	O
either	O
SVGAlib	B-Application
or	O
the	O
framebuffer	B-Algorithm
of	O
the	O
system	O
's	O
graphics	B-Device
card	I-Device
.	O
</s>
<s>
The	O
graphics	O
stack	O
has	O
several	O
peculiarities	O
for	O
a	O
web	B-Application
browser	I-Application
.	O
</s>
<s>
This	O
allows	O
the	O
browser	B-Application
to	O
be	O
one	O
executable	O
file	O
independent	O
of	O
the	O
system	O
libraries	O
.	O
</s>
<s>
All	O
graphic	O
elements	O
(	O
images	O
and	O
text	B-Protocol
)	O
are	O
first	O
converted	O
from	O
a	O
given	O
gamma	O
space	O
(	O
according	O
to	O
known	O
or	O
assumed	O
gamma	O
information	O
in	O
PNG	O
,	O
JPEG	O
etc	O
.	O
)	O
</s>
<s>
This	O
Floyd-Steinberg	B-Algorithm
dithering	I-Algorithm
engine	O
considers	O
the	O
gamma	O
characteristics	O
of	O
the	O
monitor	O
and	O
uses	O
768KiB	O
of	O
dithering	O
tables	O
to	O
avoid	O
time	O
expensive	O
calculations	O
.	O
</s>
<s>
A	O
technique	O
similar	O
to	O
self-modifying	B-Application
code	I-Application
,	O
function	O
templates	O
,	O
is	O
used	O
to	O
maximise	O
the	O
speed	O
of	O
the	O
dithering	O
engine	O
without	O
using	O
assembly	B-Language
language	I-Language
optimization	O
.	O
</s>
<s>
The	O
reason	O
for	O
this	O
high-quality	O
processing	O
is	O
:	O
to	O
provide	O
proper	O
realistic	O
up	O
and	O
downsampling	O
of	O
images	O
,	O
and	O
photorealistic	O
display	O
regardless	O
of	O
the	O
monitor	O
gamma	O
,	O
without	O
colour	O
fringing	O
caused	O
by	O
8-Bit	O
gamma	O
correction	O
built	O
into	O
the	O
X	B-Operating_System
server	O
.	O
</s>
<s>
Links	O
has	O
graphics	O
drivers	O
for	O
the	O
X	B-Operating_System
Server	O
,	O
Linux	O
framebuffer	B-Algorithm
,	O
svgalib	B-Application
,	O
OS/2	B-Application
PMShell	O
and	O
AtheOS	O
GUI	B-Application
.	O
</s>
<s>
Experimental/Enhanced	O
Links	O
(	O
ELinks	O
)	O
is	O
a	O
fork	B-Application
of	O
Links	O
led	O
by	O
Petr	O
Baudis	O
.	O
</s>
<s>
It	O
has	O
a	O
more	O
open	O
development	O
and	O
incorporates	O
patches	O
from	O
other	O
Links	O
versions	O
(	O
such	O
as	O
additional	O
extension	O
scripting	O
in	O
Lua	B-Language
)	O
and	O
from	O
Internet	O
users	O
.	O
</s>
<s>
Hacked	O
Links	O
is	O
another	O
version	O
of	O
the	O
Links	O
browser	B-Application
which	O
has	O
merged	O
some	O
of	O
Elinks	O
 '	O
features	O
into	O
Links	O
2	O
.	O
</s>
<s>
Andrey	O
Mirtchovski	O
has	O
ported	O
it	O
to	O
Plan	B-Operating_System
9	I-Operating_System
from	I-Operating_System
Bell	I-Operating_System
Labs	I-Operating_System
.	O
</s>
<s>
It	O
is	O
considered	O
a	O
good	O
browser	B-Application
on	O
that	O
operating	O
system	O
,	O
though	O
some	O
users	O
have	O
complained	O
about	O
its	O
inability	O
to	O
cut	O
and	O
paste	O
with	O
the	O
Plan	B-Operating_System
9	I-Operating_System
snarf	O
buffer	O
.	O
</s>
<s>
Links	O
were	O
also	O
ported	O
to	O
run	O
on	O
the	O
Sony	B-Operating_System
PSP	I-Operating_System
platform	O
as	O
PSPRadio	O
by	O
Rafael	O
Cabezas	O
with	O
the	O
last	O
version	O
(	O
2.1pre23_PSP_r1261	O
)	O
released	O
on	O
February	O
6	O
,	O
2007	O
.	O
</s>
<s>
The	O
BeOS	B-Application
port	O
was	O
updated	O
by	O
François	O
Revol	O
who	O
also	O
added	O
GUI	B-Application
support	O
.	O
</s>
<s>
It	O
also	O
runs	O
on	O
Haiku	B-Language
.	O
</s>
