<s>
The	O
GD	B-Language
Graphics	I-Language
Library	I-Language
is	O
a	O
graphics	O
software	O
library	O
for	O
dynamically	O
manipulating	O
images	O
.	O
</s>
<s>
The	O
images	O
can	O
be	O
composed	O
of	O
lines	O
,	O
arcs	O
,	O
text	O
(	O
using	O
program-selected	O
fonts	O
)	O
,	O
other	O
images	O
,	O
and	O
multiple	O
colors	O
,	O
supporting	O
truecolor	O
images	O
,	O
alpha	B-Algorithm
channels	I-Algorithm
,	O
resampling	B-Algorithm
,	O
and	O
many	O
other	O
features	O
.	O
</s>
<s>
Its	O
native	O
programming	O
language	O
is	O
ANSI	O
C	B-Language
,	O
but	O
it	O
has	O
interfaces	O
for	O
many	O
other	O
programming	O
languages	O
.	O
</s>
<s>
GD	O
supports	O
numerous	O
programming	O
languages	O
including	O
C	B-Language
,	O
PHP	B-Application
,	O
Perl	B-Language
,	O
Python	B-Language
,	O
OCaml	B-Language
,	O
Tcl	B-Operating_System
,	O
Lua	B-Language
,	O
Pascal	B-Application
,	O
GNU	B-Language
Octave	I-Language
,	O
Rexx	B-Language
,	O
Ruby	B-Language
and	O
Go	B-Application
.	O
</s>
<s>
GD	O
is	O
extensively	O
used	O
with	O
PHP	B-Application
,	O
where	O
a	O
modified	O
version	O
supporting	O
additional	O
features	O
is	O
included	O
by	O
default	O
as	O
of	O
PHP	B-Application
4.3	O
and	O
was	O
an	O
option	O
before	O
that	O
.	O
</s>
<s>
As	O
of	O
PHP	B-Application
5.3	O
,	O
a	O
system	O
version	O
of	O
GD	O
may	O
be	O
used	O
as	O
well	O
,	O
to	O
get	O
the	O
additional	O
features	O
that	O
were	O
previously	O
available	O
only	O
to	O
the	O
bundled	O
version	O
of	O
GD	O
.	O
</s>
<s>
The	O
software	O
was	O
developed	O
in	O
1994	O
by	O
Thomas	B-Language
Boutell	I-Language
and	O
others	O
.	O
</s>
<s>
Support	O
for	O
drawing	O
GIFs	O
was	O
dropped	O
in	O
1999	O
when	O
Unisys	O
revoked	O
the	O
royalty-free	O
license	O
granted	O
to	O
non-commercial	O
software	O
projects	O
for	O
the	O
LZW	B-Algorithm
compression	I-Algorithm
method	O
used	O
by	O
GIFs	O
.	O
</s>
<s>
Version	O
2.0	O
added	O
support	O
for	O
truecolor	O
images	O
,	O
alpha	B-Algorithm
channels	I-Algorithm
,	O
resampling	B-Algorithm
(	O
for	O
smooth	O
resizing	O
of	O
truecolor	O
images	O
)	O
,	O
and	O
many	O
other	O
features	O
.	O
</s>
<s>
The	O
following	O
is	O
an	O
example	O
which	O
outputs	O
a	O
3D	O
looking	O
pie	O
chart	O
(	O
from	O
the	O
PHP	B-Application
GD	O
documentation	O
on	O
the	O
function	O
)	O
.	O
</s>
